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

<passage>:
screamed: "He'll drown!" poor woman has waited eighty years for her merchandise!" Milly was reading aloud the scrawled words on the order form: Ann Hartley was returning from mailing the letter when she found the large parcel on her doorstep. She put her hands on her hips and stared pugnaciously at the bundle. "The minute I write a letter to complain about you, you turn up!" she told the parcel. She nudged her toe peevishly against the brown paper wrappings that were tied with a half-transparent twine she had never seen before. The label was addressed in a wandering scrawl, a sharp contrast to the delivery man that the contents would make a rattling sound and therefore hadn't been broken in shipment. Ann sighed and picked up her bundle. With a last look at the lovely Two-year-old Sally heard the box rattling. She waddled up on chubby "Your dress ought to be here," Ann said. She found scissors in her sewing box, tossed a cushion onto the floor, sat on it, and began to open the parcel. Then they'll write again." Out of consideration for Sally, she omitted "There!" Sally said. Ann repressed an irrational urge to slap her daughter. Instead, she tossed the wrappings aside and removed the lid from the carton. A slightly crushed thin cardboard box lay on top. Ann pulled out the dress and shook it into a freely hanging position. Then she groaned. It was green and she had ordered blue. It didn't remotely resemble the dress she had admired from the Hartshorne-Logan catalogue illustration. Moreover, the shoulders were lumpier than any small girl's dress should be. But Sally was delighted. "Mine!" she shrilled, grabbing for the dress. "It's probably the wrong size, too," Ann said, pulling off Sally's dress to try it on. "Let's find as many things to complain about as we can." The dress fitted precisely, except for the absurd shoulder bumps. Sally "We'll have to send it back," Ann said, "and get the one we ordered." She tried to take it off, but the child squawked violently. Ann grabbed her daughter's arms, held them above her head and pulled at the dress. It seemed to be stuck somewhere. When Ann released the child's arms to loosen the dress, Sally squirmed away. She took one step forward, then began to float three inches above the ground. She landed just before Sally looked scared until she saw her mother's face. Then she squealed Ann's legs were rubber. She was shaking her head and wobbling "Les! I'm going crazy or something. Sally just—" Sally crouched to jump at her father. Before she could leap, he grabbed her up bodily and hugged her. Then he saw the box. "Your order's here? Good. What's this thing?" He was looking at a small box he had pulled from the carton. Its lid contained a single word: "I don't know," Ann said. "Les, listen. A minute ago, Sally—" have made a mistake. It looks like some kind of farm equipment." He tossed the manky onto the hassock and delved into the carton again. Sally was still in his arms. "It looks terribly expensive. Maybe they sent door chimes instead of the doorbell." The bottom of the carton contained the detective outfit that they had ordered for their son. Ann glanced at its glaringly lithographed cover and said: "Les, about Sally. Put her down a minute and watch what she does." Les stared at his wife and put the child onto the rug. Sally began to "That round thing must be leaking," Les said. "But did you see Sally fingers. She tossed it to Les. Immediately, she regretted her action. She collapsed into Les's arms, babbling incomprehensibly. He said: "It's all right. There must be balloons or something in the shoulders of that dress. I'll tie a paperweight to Sally's dress and that'll hold her down until we undress her. Don't worry. And that green dye or whatever it is will wash off." Ann immediately felt better. She put her hands behind her back, pulled off her ring and slipped it into her apron pocket. Les was sentimental about her removing it. "I'll get dinner," she said, trying to keep her voice on an even keel. "The children have some new toys," Ann improvised hastily. "Sally is so excited over a new dress that she's positively feverish. Let's see now—it was sugar that you want, wasn't it?" "I already have it," Bob said, handing a filled cup to his mother. "Where did this come from?" Les held a small object in the palm of his hand, keeping it away from his body. A few drops of something wife. "I don't know why you ordered such a thing." He tossed the booklet into the empty box. "I'm going to return it, if you don't smudge it up," she replied. "Look and the towel. She began to yell at him for making such a mess, when Sally floated into the kitchen. The girl was wearing a nightgown. that dress herself. Where did she get that nightgown?" Ann fingered the garment. She didn't recognize it as a nightgown. But in cut and fold, it was suspiciously like the dress that had arrived in the parcel. Her heart sank. She picked up the child, felt the hot forehead, and said: "Les, I think it's the same dress. It must change color or something when it's time for a nap. It seems impossible, but—" She shrugged mutely. "And I think Sally's running a temperature. I'm going to put her to bed." keeping her balance with difficulty, as Sally threatened to pop upward out of her arms. closet where the manky sat. Sally was whining occasionally in her sleep. When daylight entered her room, Sally's nightgown had turned back into the new dress. But the little girl was too sick to get out of bed. She wasn't hungry, her nose was running, and she had a dry cough. Les called the doctor before going to work. at the envelope, until she realized that this wasn't an impossibly quick answer to the letter she had written yesterday. It must have crossed in the mail her complaint about the non-arrival of the order. She tore open the envelope and read: the purchasing of merchandise on credit. We shall fill your recent order as soon...." Ann crumpled the letter and threw it into the imitation fireplace, knowing perfectly well that it would need to be retrieved for Les after difficulty, to admit Dr. Schwartz. "You aren't going to believe me, Doctor," Ann said while he took the child's temperature, "but we can't get that dress off Sally." before I try to move her. Let me undress her." Sally had been mumbling half-deliriously. She made no effort to resist as the doctor picked her up. But when he raised a fold of the dress and began to pull it back, she screamed. The doctor dropped the dress and looked in perplexity at the point where it touched Sally's skin. "It's apparently an allergy to some new kind of material. But I don't understand why the dress won't come off. It's not stuck tight." "Don't bother trying," Ann said miserably. "Just cut it off." of the cloth. Sally writhed and kicked, then collapsed in a faint. The weary sadness. "People will suspect you of being a sex maniac for the rest of your life. You can't possibly explain—" "Don't bother about the girls' clothing," Bob said, "because it was only an accident. The really important thing is something else I did before I left the house."

<question>:
What caused Sally to float through the air?

<options>:
A The manky that was in the shipment.
B The strange doorbell with no wire.
C They eyeball from the detective kit.
D The dress that was in the shipment.

<answer>:

D