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

<passage>:
THE HAIRY ONES Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] "The outlaw ships are attacking!" Old Garmon Nash's harsh voice snapped like a thunderclap in the cramped rocket flyer's cabin. "Five or six of them. Cut the searchlights!" series of vast caves that underlie the waterless wastes of Mars, the reflected waves of sound were of little value. Distances were far too cramped—disaster might loom but a few hundred feet away. Planet Patrol ship as he swung the deadly slimness of his rocket blast's barrel around to center on the fiery jets that betrayed the their invisible preliminary jets of gas, and three times an enemy craft flared up into an intolerable torch of flame before they realized the In a slow sort of wonder Rolf felt the scrape of rock against metal, and then the screeching of air through the myriad rents in the cabin's meralloy walls grew to a mad whining wail. least the air was thick enough to support life, and somewhere nearby the outlaws who smuggled their precious contraband water into the had slowed its speed at him more strongly as he neared the wall. And the barrier became a jumbled mass of roughly-dressed stone slabs, from whose earth-filled crevices sprouted green life. loom of the mysterious wall with a swift wind off the desert behind him. A hundred yards from the base of the rocky wall his feet scraped bushes. "Down, Altha," a deeper voice rumbled from above, "it's one of the Enemy." The voice had spoken in English! Rolf took a step forward eagerly and then doubt made his feet falter. There were Earthmen as well as Frogs among the outlaws. This mysterious world that floated above the cavern faster. "This Mark Tanner of mine," she explained to the patrolman, "is always afraid for me. He does not remember that I can see into the minds of others." Hairy People." "Mark!" The girl's voice was tense. Rolf felt her arm tug at his sleeve and he dropped beside her in the shelter of a clump of coarse-leaved gray bushes. "The Furry Women attack!" A hundred paces away Rolf made the dark shapes of armed warriors as they filed downward from the Barrier into the blackened desolation of Barrier from the fertile plains of Nyd to raid the Hairy People. They take them for slaves." "I must warn them." Altha's lips thinned and her brown-flecked eyes of the Hairy People in her veins. She will warn them even though the barren desert and swing to the right along the base of the Barrier. Spear tips and bared swords glinted dully. "They will pass within a few feet!" he hissed. "Right." Tanner's fingers bit into Rolf's arm. "Pray that the wind does not shift, their nostrils are sensitive as those of the weasels they resemble." as the undulating coils of a serpent, rose the snaky ditigrade head the gray-furred muscles of their narrow bodies until they seemed utterly shoulderless, and beneath their furry pelts the ripples of smooth-flowing muscles played rhythmically. There was a stench, a musky penetrating scent that made the flesh of his body crawl. "See!" Tanner's voice was muted. "Giffa, Queen of the Furry Ones!" firmly across his arm. The older man shook his head. "Not yet," he said. "When Altha has warned the Hairy People we can cut off their retreat. After they have passed I will arouse the Outcasts who live here upon the Barrier. Though their blood is that of the two races mingled they hate the Furry Ones." A shadow passed over their hiding place. The Furry Amazons too saw the indistinct darkness and looked up. High overhead drifted the narrow winged shape of a glider, and the warrior women shrieked their hatred. Gone now was their chance for a surprise attack on the isolated canyons of the Hairy People. the wasteland toward the nearest sunken valleys of the Hairy People. Rolf and Mark Tanner came to their feet. Abruptly, then, the wind veered. From behind the two Earthmen it came, bearing the scent of their bodies out to the sensitive nostrils of the beast-women. Again the column turned. They glimpsed the two men and a hideous scrawling battle-cry burst from their throats. Rolf's expoder rattled briefly like a high-speed sewing machine as he flicked its muzzle back and forth along the ranks of attacking Furry arrows at the bloodthirsty warrior women. But the Furry Ones ran fearlessly into that rain of death. The expoder hammered in Rolf's heavy fist. Tanner smashed an elbow into Rolf's side. "Retreat!" he gasped. The Furry Amazons swarmed up over the lower terraces of rocks, their snaky heads thrust forward and their swords slashing. The two Earthmen bounded up and backward to the next jumbled layer of giant blocks behind them, their powerful earthly muscles negating Lomihi's feeble gravity. Spears showered thick about them and then they dropped behind went bounding away along a shadowy crevice that plunged raggedly into the heart of the Barrier. Rolf blasted another spurt of explosive needles at the Furry Ones and followed. Darkness thickened as they penetrated into the maze of the Barrier's Bat-winged blobs of life dragged wet leathery hide across his face, and desolate land of the Hairy People. glider riding the thermals back toward the Barrier. "She had warned the Hairy People, and now she returns." "The weasel heads won't follow us here?" asked Rolf. Tanner laughed. "Hardly. They fear the spirits of the Ancients too much "The Hairy People were the rulers," he went on, "and the Furry Ones The glider knifed forward with that first swift impetus, and drove out over the Barrier. The Furry Ones were struggling insect shapes below him, and he saw with a thrill that larger bodied warriors, whose bodies glinted with a dull bronze, were attacking them from the burnt-out wastelands. The Hairy People had come to battle the invaders. There would be no explosion of expoder needles to warn the fellow's he identified as the hammering of blood in his throbbing temples, and undisciplined men would have permitted to accumulate. The cabin shifted with the weight of bodies moving from their seats. Rolf heard voices from a distance and the answering triumphant bawling torch away from his body and freed it. Heat blasted at his body as the stepped-up output of the torch made the in the blanketing fog and looked forward. One of the men flung himself out the door, but the other reached for the extinguisher close at hand. His thoughts were on the oily smoke not on the prisoners, and so the impact of Rolf's horizontally propelled body drove the breath from his lungs before his hand could drop to his belted expoder. instinctively aside from the crippling blows aimed at his body. For a moment they fought, coughing and choking from the thickening pall of The patrolman was weary trek afterward through the dark tunnels had sapped his strength, and he heard a cry of pain and the blessed air gulped into his raw throat. burned and the conditioning unit was clearing the air. sudden strange restlessness came with the near contact. Furry Ones racing back across the great wall toward the Plains of

<question>:
Why was there fear for the wind shifting around the Hairy People?

<options>:
A They wind would block the mind reading abilties of the Hairy People.
B The wind would cause explosions.
C The wind would spread the hair from the Hairy People and block vision.
D The wind would spread the scent of the Earthmen and cause an attack

<answer>:

D