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

<passage>:
GRANDMA PERKINS AND THE SPACE PIRATES By JAMES McCONNELL Raven-haired, seductive Darling Toujours' smoke-and-flame eyes kindled sparks in hearts all over the universe. But it took sweet old Darling Toujours, the raven-haired, creamy-skinned televideo actress whose smoke-and-flame eyes lit fires in hearts all over the solar system. She was credited with being the most beautiful woman alive and Callisto, one of Jupiter's moons, back to Earth. But none of the two hundred Earthbound passengers were conscious of the speed at all. Darling Toujours waved a long cigarette holder at the author. "Don't pay any attention to him, Captain. You know how writers are—always putting words in other people's mouths, and not very good ones at that." "Do you mean not very good words or not very good mouths, my dear?" Carlton asked. The solar system's most famous actress clamped her scarlet lips shut with rage. It would take someone like Carlton E. Carlton, she knew, to point out the one minor blemish in an otherwise perfect body—her slightly over-sized mouth. Earth for two weeks. So she had kept her ticket in spite of Carlton. "I must say that I think Miss Toujours has the prettiest mouth I've little more of the Toujours charms to the Captain's eye. Darling Toujours drew back her hand to smack Carlton one in a very unlady-like manner when she suddenly realized that they were not alone. Her hand froze, poised elegantly in mid-air, as she turned to see a in volumes of black cloth draped on her in a manner that had gone out of style at least fifty years before. The little woman coughed politely. "I beg your pardon," she told them in a sweet, high little voice. "I hope I didn't interrupt anything. If you would like to hit the gentleman, Miss Toujours, I'll be glad to come back later." Darling Toujours opened her violet eyes wide in surprise. "Why, I was ... I was ... I—" The actress uttered a small, gulping sound as she recovered her poise. "Why, I was just going to pat him on the cheek with laughter and the good Captain colored deeply. "Oh," said the little old woman, "I'm sorry. I didn't know that he was your son." Carlton choked suddenly and Darling suffered from a brief fit of hysteria. she had moved to the door to Darling Toujours' suite and had opened it, stepping inside. "That's my room, not the door out," Darling said loudly. lying on the bed." Mrs. Perkins picked up the sheer, gossamer garment to examine it. "You do wear something under it, don't you?" Darling screeched and darted for the door. She snatched the nightie away from Mrs. Perkins and rudely propelled the older woman out the door, closing it behind her. "Captain, this woman must GO!" won't put you off against your wishes. Of course, they don't dare do it for a long time, by herself, just thinking. But her hopes met with disappointment. For shortly after she sat down, Darling Toujours and Carlton E. Carlton strolled over and sat down across from her, not recognizing her at first. Then Carlton spied her. "Darling! There's that priceless little woman we met this afternoon." "The little hag, you mean," Miss Toujours muttered under her breath, but loudly enough for Grandma Perkins to hear. "Why, hello, Miss Toujours. And Mr. Carlton too. I hope you'll forgive me for this afternoon. I've found out who you were, you see." "Of course we forgive you, Mrs. Jerkins," Darling said throatily, baring her teeth like a feline. "My name is Perkins," Grandma smiled. deal of my grandniece, Agatha. She was undoubtedly the most lovely child I've ever seen." "Why, thank you, Mrs. Perkins," Darling purred, starting to preen just a bit. Anything could be forgiven someone who complimented her. pity. She was so pretty, just like you." Darling Toujours muttered a few choice words under her breath. "But we must all make the best of things as they come. That's what Omar, my husband, used to say." Grandma paused to wipe away a small rummaging around in its voluminous confines. Darling and Carlton exchanged horrified glances and then rose silently and tip-toed out of the lounge. Grandma looked up from her search. "Oh, my, they seem to have gone." embarrassed them, so I guess it's for the best, but—" Grandma Perkins never finished the sentence, for interrupting her came the horrendous clang of the Kismet's "PIRATES! PIRATES! We're being attacked by space pirates! You there!" quarters at once! PIRATES!" he shouted again and barged through the and an old woman like me shouldn't be up and about when pirates are suddenly, came the raucous voice of Captain Fogarty as he stalked onto The Communications Officer spoke up. "The pirate ship reports that "Pirates! Attacking us! Incredible!" cried the Captain. "There are no pirates any more. What have we got a Space Patrol for? Where in blazes Captain Fogarty snorted. "Fat lot of good he'll do us. Wait for him, eh? Well, we'll just blow that pirate out of the sky right now. Stand run them won't operate at all. What will we do?" "Pirates going to board us. How nice," muttered Grandma to herself as "They'll never get through the hatches alive. At least our small arms still work. We'll kill 'em all!" cried Captain Fogarty. "Tell them I'd rather all of us be killed than to let one dirty pirate The outer hatch opened almost immediately. The radio in Grandma's suit crackled with static. "What are you doing here?" demanded a voice over "Pirates! I'm hiding from the pirates. They'll never find me here!" she told them in a voice she hoped sounded full of panic. "What's your name?" asked the voice. "Darling Toujours, famous television actress," she lied quite calmly. "That's the one, boys," said another voice. "Let's go." Catching hold Half an hour later, after the pirate ship had blasted far enough away Lamps O'Toole, the nominal leader of the pirates, stretched his brawny to one another. "You bet, Skipper. We're full fledged pirates now, just "Oh, no, thank you. I feel much better with it on," a small voice said over the suit's loudspeaker system. "Holy Smoke (or something like that)," said one of the men. "Nippin' Nebulae," said another. "It ain't Darling Toujours at all!" cried Lamps. "It ain't even no woman!" cried Snake. "I beg your pardon," said Grandma, and quite nonchalantly shed the rest Kismet , searching for only one person, I decided that one person had to be Darling Toujours. I guessed right off that she was the only one on board worth kidnapping and holding for ransom, so I simply let you believe that I was she and "Captain Fogarty's men would have cut you to ribbons. So I opened the be to run away and join a gang of cutthroat pirates." the whole fleet in after us and track us and our families down to the really pirates. We used to operate this tub as a freighter between the to become pirates. This was our first job, and we sure did need the "Well, it doesn't seem to me that you're ever going to be good pirates

<question>:
How are the pirates foiled?

<options>:
A They board the Kismet without backups
B They don’t know what Darling actually looks like
C They don’t use their tractor beam to lock onto Kismet
D They don’t know what Darling sounds like

<answer>:

D