[Q]: Local hospital has launched a program to check if a patient has Retinitis. Resident ophthalmologist David is in charge of this program. In the first day of the program he checked two patients, patient A and patient B. The test result showed that patient A had Retinitis, but patient B did not have Retinitis. Then next day David checked two other patients, patient C and patient D. Patient C was 40 years old, but patient D was 80 years old. He found both patient C and D had Retinitis. Which patient would not have inflammation of retina, patient A or patient B?
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[A]: patient B

[Q]: Two neighboring counties, Brown and Green county, had different weather patterns occur last month. The weather in Brown county was quite stable, but green county experienced atmospheric convection and other related phenomena. Which county had less parcel-environment instability?
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[A]: Brown

[Q]: David wants to revisit the theory of evolution proposed by Darwin and Wallace. He is particularly interested in two species of deer, species A and species B. Species A has some helpful traits, but species B has some harmful traits. He is planning to write a paper on why some species are greater in number while others are smaller in number. Which species would increase in number, species A and species B?
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[A]: species A

[Q]: Two sisters both had allergies. Ann had mild allergies, while Jo had to be very careful because she experienced severe allergic reactions before. Which sister didn't get itchy eyes?
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[A]:
Jo