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

<passage>:
never die. Of course, it was up to the Earth doctor to see that he didn't! [Transcriber's Note: This etext was produced from ship from HQ in Standard GPP Contract code for crash priority, which meant Top Grade Planetary Emergency, and don't argue about it, fellows, just get there, fast. Red Doctor Sam Jenkins took one look at the Ten minutes later the Red Doctor reached for the results of the Initial Green Doctor Wally Stone frowned and scratched his whiskered chin. summarily shot and the others came home with their ears cut off. Seems the folks on Morua II didn't want a Contract with Hospital Earth. And they're still in the jungle, as far as their medicine goes. Witch doctors and spells." He tossed the Info-card down the chute with a growl. "So now we have an emergency call from them in a Contract code they couldn't possibly know." The surgeon in the green undershorts chewed his lip. "Looks like If we still happen to be around later, that is." It had always been that way. Since the first formal Medical Service Contract had been signed with Deneb III centuries before, Hospital Contract. In the early days of galactic exploration, of course, Medical Services was only a minor factor in an expanding commercial network that drew transport, and in production techniques—but Earth stood unrivaled in its development of the biological sciences. Wherever an Earth ship landed, the crew was soon rendering Medical Services of one sort or another, whether they had planned it that way or not. On Deneb III the Medical Service Contract was formalized, and Hospital Earth came chain of Contracts from Aldebaran to Zarn, accepting calls, diagnosing ills, arranging for proper disposition of whatever medical problems they came across. Serious problems were shuttled back to Hospital Earth more frequently the GPP crews—doctors of the Red and Green services, representing the ancient Earthly arts of medicine and surgery—were able to handle the problems on the spot and by themselves. homed on the dismal grey planet with an escort of eight the scarlet and green uniforms of their respective services, the main physicians, eh?" He eyed them up and down as though he disapproved of The Red Doctor blinked at his companion, then turned to Aguar. "What We have you here now. You are doctors, you say. Cure Doc." "Probably a viremia of some sort." Jenkins went over the great groaning hulk with inquiring fingers. "If it's a viremia, we're cooked," Stone whispered. "None of the drugs cross over—and we won't have time to culture the stuff and grow any "What about your own doctors?" green flames? Death flames. They leave him here to die. But now that is all over. We have heard about you wizards from Hospital Earth. You cure all, the stories say. You are very wise, they say. You balance "We'll need supplies and information from our ship. We'll have to consult your physicians. We'll need healthy Moruans to examine—" "Might not be such a bad idea for Morua," the Red Doctor muttered just to keep alive for a while." "Yeah," said Wally. "What, for instance?" "Well, we've got a little to go on just from looking at them. They're oxygen-breathers, which means they manage internal combustion of carbohydrates, somehow. From the grey skin color I'd guess at a cuprous or stannous heme-protein carrying system. They're carnivores, but god knows what their protein metabolism is like—Let's get going on some of send in a full crew of technicians to a newly-Contracted planet to physiologists, anatomists, microbiologists, radiologists—survey qualities in common. Biochemical reactions were biochemical reactions, whether they happened to occur in a wing-creature of Wolf IV or a doctor from Sol III. Anatomy was a broad determinant: a jelly-blob from For the crew of the Lancet six hours was seven hours too long. They herded cringing Moruan "volunteers" into the little ship's lab. Jenkins handled external examinations and blood and tissue chemistries Stone ran the X-ray and pan-endoscopic examinations. After four grueling hours the Red Doctor groaned and scowled at the growing pile of data. Silence. "All right then, what causes it? Do you know? Bacteria? Virus? Degeneration?" Silence. the Red Doctor cut him off. "It in bewilderment. "You're going to kill him," he moaned. "Prayers, promises, pills and post-mortems. That's the Medical service for you." Sam grinned. "Maybe you should operate on him. That "No thanks, not me. This is a medical case and it's all yours. What do you want me to do?" Outside the royal chambers Jenkins found a group of green-clad as Jenkins entered the sickroom the wails rose ten decibels and took on a howling-dog quality. Aguar met him at the door. "He's dying," he roared angrily. "Why don't braziers, Red Doctor Jenkins drew the wizard aside. anybody ever recover from this?" the second he adjusted to a steady drip-drip-drip. Next he pulled two large bunsen burners and a gas tank from the bag. the patient's mouth. His Eminence rose up with a gasp, choking and fighting, but the tube went down. The Red Doctor ground three white rhythm with the intravenous drip ... and waited. The room was deathly still except for a heavy snuffling sound from His purple stuff gurgled quietly. An hour passed, and another. Suddenly Jenkins motioned to Kiz. "His pulse—quickly!" Kiz scampered gratefully over to the bedside. "A hundred and eighty," he whispered. Jenkins' face darkened. He peered at the sick man intently. "It's a Without breaking the rhythm he transferred the plinking-job to Kiz. He changed the dwindling intravenous bottle. "Call me when the bottle is empty—or if there is any change. Whatever you do, now—plenty of them." The plink-plink rose to a frantic staccato as Jenkins checked the patient's vital signs, wiped more sweat from his furry brow. Quite suddenly His Eminence opened bleary eyes, stared about him, let out a monumental groan and buried his head in the blankets. In two minutes each other like long-lost brothers at a sad farewell. "I finally got through to somebody at HQ," he said as the Red Doctor climbed aboard. "It'll take them twenty days at least, to get help, considering that Morua is not a Contract planet and we're not supposed to be here in the they've got things all wrong back at HQ." He brandished a huge roll of parchment, stricken through with the colors of the seven Medical Services of Hospital Earth. "Take a look, my boy—the juiciest Medical Services Contract that's been written in three centuries—" He tossed the Contract in the dry-storage locker with a sigh. "Old Kiz just "So am I," said the Green Doctor suspiciously. doctors ," said Jenkins. "They expected them, obviously, since that was the only level of medicine Bio-survey we were hamstrung. But whatever the Pox is, it obviously involves fever, starvation and dehydration. I knew that His Eminence could assimilate carbohydrates, and I took a long gamble that an antipyretic wouldn't hurt him too much—" Wally Stone's jaw sagged. "So you treated him with sugar-water and aspirin," he said weakly. "And on that you risked our necks." "Not quite," said the Red Doctor. "You're forgetting that I had healer-of-all-ills known to medicine, just as potent now as it was a adjusted the scarlet band of the Red Service across his shoulders. "We

<question>:
What were the specialties of the Red and Green Doctors, respectively?

<options>:
A Blood, Brain
B Unknown
C Heart, Digestive
D Blood, Respiratory

<answer>:

B