[Q]: Robert, a baker, has just baked a large batch of cupcakes for his store. He won't be able to sell all of his cupcakes within the next week, so he has decided to store a portion of them in the freezer to preserve them for later. He is trying to decide if he should store the cupcakes at 0 F or at 10 F in the freezer. Which temperature will result in faster decay of the cupcakes?
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[A]: 10 F

[Q]: Environmental scientists are trying to find a solution to reducing the harmful effects of chemicals on the environment. To that end, they developed a transgenic crop with the help of Bt toxin - they referred to it as case A. To test the effectiveness of this new crop they also studied Bt toxin spray - they referred to it as case B. They need to figure out which case is safer for the environment. In which case the Bt toxin does not need to be digested by the insects, case A or case B?
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[A]: case A

[Q]: Gary researched two old human settlements. Village A was smaller, it existed about 12,000 years ago. He also studied village B, which existed about 6,000 years ago. The village was much bigger and better developed. Which village had higher birth rates?
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[A]: village B

[Q]: A doctor tested two people for HIV. Tom had the virus in his blood, while Nick didn't have HIV, he was healthy. Tom has apparently had the virus for 20 years. Which person didn't have the number of HIV copies increasing as time passed?
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[A]:
Nick