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

<passage>:
RETIEF OF THE RED-TAPE MOUNTAIN Retief knew the importance of sealed in to handle the situation, Retief—under sealed orders." He picked up a fat buff envelope. "A pity they didn't see fit to order the Terrestrial settlers out weeks ago, as I suggested. Now it is too late. I'm expected to produce a miracle—a rapprochement between Terrestrial and Adoban and a division of territory. It's idiotic. However, failure would look very bad in my record, so I shall expect results." He passed the buff envelope across to Retief. delicate situation such as this, there must be no impulsive, impromptu "Hold on," said Retief. "I've got to get down. They won't shoot at you." The pilot plunged against the restraint, swung a punch that Retief Retief crawled into the narrow cockpit of the skiff, glanced over the controls. The pilot ducked out of sight, came back, handed Retief a Retief felt sweat pop out on his forehead. The red blip meant heavy shocks, a final bone-shaking concussion, then stillness, broken by the Coughing, Retief disengaged himself from the shock-webbing. He beat Retief edged back around the trunk, eased down behind a fallen log. As he passed, Retief rose, leaped the log and tackled him. struggled in silence. Retief flipped him onto his back, raised a fist— Flap-jack boat looks just like 'em. I took a shot when I saw something mistake. Lemuel's a tough man to explain something to." "I'm—" "Keep your head down. These damn Flap-jacks have got some wicked hand weapons. Come on...." He moved off silently on all fours. Retief Retief looked down at the charred, torn and sweat-soaked powder-blue Flap-jack." "I won't, but—" Potter was on his way, loping off up a gentle slope. Retief pulled off "We're damn glad you're here, mister," said a fat man with two revolvers belted across his paunch. "We can use every hand. We're in bad shape. We ran into the Flap-jacks three months ago and we haven't made a smart move since. First, we thought they were a native form we "But we're hanging onto our farms," said Potter. "All these oases are old sea-beds—a mile deep, solid topsoil. And there's a couple of hundred others we haven't touched yet. The Flap-jacks won't get 'em while there's a man alive." you know these Embassy stooges." "We heard they were sending some kind of bureaucrat in here to tell us to get out and give the oases to the Flap-jacks," said Swazey. He tightened his mouth. "We're waitin' for him...." Retief. "We put out the word back home. We all got relatives on Ivory Retief's left fist shot out, smacked Lemuel's face dead center. He dirt as he dropped it. He caught himself, jumped for Retief ... and met "Later. Sit tight and keep your eyes open." Retief took a bearing on a of open ground to another shelter. Retief watched. Minutes passed. The There was a sudden rasp, like leather against concrete, and a flurry of sand as the Flap-jack charged. Retief rolled aside, then lunged, threw his weight on the flopping Flap-jack—a yard square, three inches thick at the center and all It scrabbled with prehensile fringe-tentacles for a grip on Retief's The Flap-jack reversed its tactics, went limp. Retief grabbed, felt a gentlemanly, but it's effective...." The Flap-jack fell still, only its fringes rippling slowly. Retief relaxed the pressure of his thumb "Now we understand each other," said Retief. "Take me to your leader." Twenty minutes' walk into the desert brought Retief to a low rampart of thorn branches: the Flap-jacks' outer defensive line against Terry forays. It would be as good a place as any to wait for the move by the Flap-jacks. He sat down and eased the weight of his captive off his back, but kept a firm thumb in place. If his analysis of the situation was correct, a Flap-jack picket should be along before too long.... A penetrating beam of red light struck Retief in the face, blinked off. out. Retief cocked his head, frowning. "That's fine," Retief said. "I'm here to arrange a prisoner exchange." "Prisoners? But we have no prisoners." "Sure you have. Me. Is it a deal?" "Ah, yes, of course. Quite equitable. What guarantees do you require?" "The word of a gentleman is sufficient." Retief released the alien. It "Avoid it?" Retief heard a low humming coming from the speaker in the silence. "Well, let us dine," the mighty Flap-jack said at last. "We can resolve these matters later. I am called Hoshick of the Mosaic of the Two Dawns." "I'm Retief." Hoshick waited expectantly, "... of the Mountain of Red "Take place, Retief," said Hoshick. "I hope you won't find our rude communed silently with Hoshick. "Pray forgive our lack of translating "I trust you'll find these dishes palatable," said Hoshick. "Our "Oh, by all means," Retief said. "No atomics. As you pointed out, "Ah, well, they are after all expendable. But we agree: no atomics. "Delicious," said Retief. "I wonder. Have you considered eliminating "Still, now that we have commenced so merrily with weapons...." Hoshick "New?" cried Hoshick. "My dear Retief, what a pleasant surprise! I'm two individuals settle the issue between them." "That's right. You and me." "I fear I must lay aside the translator now, Retief," said Hoshick. "Of course," Retief said, "if you'd prefer a more plebeian type of With a rush Hoshick threw himself at Retief, who ducked, whirled, and hay-maker to Hoshick's mid-section. The alien whipped his left fringe around in an arc that connected with Retief's jaw, sent him spinning Retief's air was running out. He heaved up against the smothering skin tomorrow ... if there was a tomorrow. His thumb found the orifice and probed. The Flap-jack recoiled. Retief held fast, probed deeper, groping with Retief dug in and the Flap-jack writhed, pulled away. Retief held on, top of him, still gouging. Hoshick rippled his fringe wildly, flopped Retief relaxed, released his hold and got to his feet, breathing hard. "That on which we dined but now," said Hoshick, "and from which the Hoshick curled his back in attention. "Retief, you're quite serious? You would leave all the fair sand hills to us?" "The whole works, Hoshick. I'll take the oases." Hoshick rippled his fringes ecstatically. "Once again you have outdone me, Retief," he cried. "This time, in generosity."

<question>:
What compromise did Retief and Hoshick reach that ended the conflict?

<options>:
A They agreed to split all the oases on the planet, picking by random draw which oases went to the settlers, and which to the Flapjacks.
B They agreed to put a line of demarcation around the planet in a longitudinal direction, and the colonists would get one half of the planet, and the Flapjacks the other half.
C Hoshick decided it would be better for the Flapjacks to return to Jax, and this put an end to the conflict.
D It turns out that the Flapjacks wanted land that the colonists considered worthless, so it was easy to reach an agreement in priniciple.

<answer>:

D