Problem: Customers bought two types of electrical ovens, type A and type B. They were all happy at first but type B ovens started to short circuit.  Given the paragraph above, please answer correctly the following question:   Which type of oven had fewer instances of wires overheating?

A: type A


Problem: 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.  Given the paragraph above, please answer correctly the following question:   Which person didn't have to take medicines to slow down the virus?

A: Nick


Problem: David was working in his chemistry lab. He selected two isotopes, sample A and sample B. Sample A had longer half-life, but sample B had shorter half-life. After some time he checked sample A when its one half-life had passed. He noted it as sample A1. Then he came back to see it again when two half-lives had passed. He noted it as sample A2.  Given the paragraph above, please answer correctly the following question:   Which sample would have more isotopes, sample A1 or sample A2?

A: sample A1


Problem: Two sisters went to the doctor to get screened for cancer. Lisa had cancer, while her sister Beth didn't. Lisa was terrified, but her sister comforted her.  Given the paragraph above, please answer correctly the following question:   Which sister had a disease caused by mutations?

A: