Please answer this: Two colleagues studied human evolution, Dan studied early humans, from around 200,000 years ago, while Bob studied human settlements from 10,000 years ago. Which student learned more about nomadic gatherers?
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Answer: Dan
Problem: Both Alabama and Florida boast great wetlands. The State of Alabama has experienced extensive drainage system due to expansion of farmlands. Their neighboring state Florida had similar system. But recently Florida had dismantled many of their drainage systems, mostly because of pressure from different environmental groups. Which state would not see habital loss of species, Alabama or Florida?

A: Florida
Problem: Given the question: The doctors used used the newly discovered allergy medicine on two groups of people. As a result, group Alpha experienced mild allergy symptoms, while group Beta continued experiencing severe allergy symptoms and remained hospitalized. Which group experienced a runny nose?
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The answer is:
group Alpha
input question: In his chemistry lab David is learning about acids. He took three solutions to identify them correctly, sample A, sample B, and sample C. Sample A is a strong acid; sample B is a weak acid; and sample C is not an acid. David needs to identify the content of each sample by learning about their attributes. Which sample would have lower pH value, sample A or sample B????
output answer: sample A
Two medical school students named Dan and Bob learned about the human immune system. Dan studied more about the subject, and became very interested to pursue it more in the future. Which student didn't learn that the infected skin area may become painful?
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Answer: Bob
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. For which patient Retinitis will be one of the leading causes of blindness, patient C or patient D?
A:
patient C