Read the following passage and questions, then choose the right answer from options, the answer should be one of A, B, C, D.

<passage>:
A bunch of kids in bright new uniforms, transiting the constellations in a disreputable leathery-tentacled, chlorine-breathing Eridans take them seriously? GROUNDS TETHYS SATURNIAN GROUP STOP CO WILL REPORT UPON ARRIVAL TO it in so many words ... no one was anxious for another encounter with the rapacious Eridans. With typically human adaptiveness they had sublimated their fear of the unknown space in which they found themselves. Curiosity took the place of fear and here was something "No." Whitley sighed unhappily. "And there's only one Tellurian Rocket close at hand to probe. Anthropoid inquisitiveness prevailed. turned on his stool to survey the small dance floor. The music and the subdued lights made him think of Ivy Hendricks. He really wanted to see her again. It had been a long time since that memorable flight when they had worked together to pull Admiral Gorman's flagship Atropos out of a tight spot on a perihelion run. Ivy was good to work with ... But there was apparently more to this transfer than just Ivy pulling wires to see him again. Things were tense in the System since Probe intelligences on the planets of 40 Eridani C. They lived in frozen had refused any commerce with the Solar Combine. Only CSN Intelligence knew that the Eridans were warlike ... and that they were strongly suspected of having interstellar flight.... So, reflected Strike, the transfer of the Cleopatra and tests. And Commander Strykalski was concerned. The beloved Old Aphrodisiac didn't take kindly to innovations. At least she never had before, and Strike could see no reason to suppose the cantankerous to be treated with respect." He affected a very knowing expression. "Besides, we shouldn't be gallivanting around testing Ivy's electronic eyelash-curlers when the Eridans are likely to be swooshing around old Sol any day!" cruise is going to interfere with my research on ancient twentieth . Only one tube-liner burned through, and only six hours wasted in nauseous free-fall. over. Welders and physicists, naval architects and shipfitters, all armed with voluminous blueprints and atomic torches set to work on her even before her tubes had cooled. Power lines were crossed and re-crossed, shunted and spliced. Weird screen-like appendages were welded to her bow and stern. Workmen and engineers stomped through her Strykalski raised his eyebrows inquisitively. Before Ivy could explain, Cob and Celia Graham burst noisily into the room and the greetings began again. Ivy, as a former member of the Cleopatra's crew, was one star-fields ... star-fields that were utterly different and ... and alien . It seems that there's at least one other space interlocked and looked over to Ivy. "Am I right?" "Right on the nose, Strike," she returned. Then she broke into a wide smile. "Besides, I wouldn't want to enter an alien cosmos with anyone "The nonhumans from Eridanus have launched a major invasion of the Strike felt the bottom dropping out of his stomach, and he knew that all the others felt the same. If this was a war, they were the ones who would have to fight it. And the Eridans! Awful leathery creatures Strykalski's face was dead set. "I mean it, Ivy." "All right, Strike. I'll be ready," Ivy Hendricks said coolly. Exactly three hours and five minutes later, the newly created or her crew. Ivy Hendricks joined them after stowing her gear, and when Whitley asked her opinion, she agreed with Strike. Her experiences with Gorman "And that," shrugged Ivy Hendricks, "Is that." Three weeks passed in the timeless limbo of second-order flight. Blast tubes silent, the Cleopatra Eridanus. At eight and a half light years from Sol, the second-order chlorine lines...." "Eridans!" cried Ivy. have some sort of radiation net out and they are moving into spread formation." Strike cursed. "They've spotted us and they want to scoop us in with that force net! Damn that group-mind of theirs ... it makes for uncanny speed!" Ivy could feel her heart pounding under her blouse. Her face was deadly pale, mouth pinched and drawn. This was the first time in battle for any of them ... and she dug her fingernails into her palms trying not to be afraid. vanished, only to reappear in distorted groups ahead and behind the ship. They were in second-order flight again, and traveling above light speed. Within seconds, contact would be made with the advance units of the alien fleet. Old Aphrodisiac readied herself for war. Like a maddened bull terrier, the old monitor charged at the Eridan atmosphere grew tense as the Tellurian warship drove full at the the thing that was the group-mind of the Eridans guided the thousand it prepared to kill the tiny Tellurian thing that dared to threaten its The alien weapons were too strange, too different from anything her builders could have imagined or prepared her to face. The net sucked the life from her second-order generators, and she slowed, like the victim of a nightmare. Now rays of heat reached out for her, grazing her flanks as she turned and twisted. One touched her atmospheric fins mentality that rested secure on its home world, the Eridans lacked the vicious will to live that drove the Tellurian warship and her crew. But their numbers wore her down, cutting her strength with each blow that chanced to connect. Torpedoes from the tubes that circled her beam found marks out in space and leathery aliens died, their black ships burst asunder by the violence of new atoms being created from old. But there were too many. They hemmed her in, heat rays ever slashing, wounding her. Strykalski fought her controls, cursing her, coaxing her. Damage reports were flowing into the flying bridge from every They couldn't last another ten minutes. It was only the practiced hands of her Captain and crew that kept the Cleopatra alive.... "We're caught, Ivy!" Strike shouted to the girl over the noises of battle. "She can't stand much more of this!" Cob was screaming at the gun-pointers through the open communicator circuit, his blood heated by the turbulent cacophony of crackling rays and exploding torpedoes. "Hit 'em! Damn it! Damn it, hit 'em now! Dead ahead! Hit 'em again!..." Ivy stumbled across the throbbing deck to stand at Strykalski's side. "The hyper drive!" she yelled, "The hyper drive!" only chance ... for Lover-Girl and Ivy and Cob and Celia ... for all of them. He had to chance it. "Ivy!" he called over his shoulder, "Check with Engineering! See if the thing's hooked into the surge circuit!" She struggled out of the flying bridge and down the ramp toward the engine deck. Strike and Cob stayed and sweated and cursed and fought. It seemed that she would never report. beings been so frighteningly apart scorned and lost. The others felt it, too. Ivy and Cob drew closer, until all three stood touching each other as though they could dispel the loneliness of the It was only the fact that they could return at will to their own space ... and the danger of the questing Eridans ... that kept one or Then Strike broke the spell. The effort was great, but it brushed away the shadows that had risen to plague them from the tortured abyss of racial memory. It brought them back to what they were: highly civilized mass. Like a microscopic bull in a gargantuan china shop, the Tellurian

<question>:
What is the history between Tellurians and Eridians?

<options>:
A They are both trying to conquer the Saturn system
B They have not previously engaged before, though Tellurians have studied Eridians
C Eridians have tried to make contact with the Tellurians several times
D They have entangled in combat twice before

<answer>:

B