Please answer this: David is experimenting with electromagnetic waves. He has four different waves to study, wave A, wave B, wave C, and wave D. In wave A, distance between two corresponding points on adjacent waves is greater than that of wave B. In wave C, the number of waves that pass a fixed point in a given time is greater than that of wave D. Which wave has lower frequency, wave C or wave D?
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Answer: wave D
Problem: Two sister cities used different methods to produce electricity. London used fossil fuels, while Edmonton use entirely hydro power to generate energy. Which city causes more air pollution?

A: London
Problem: Given the question: Timothy and Jordan both just bought their first cars. Timothy's car comes with state of the art airbags that decelerate the driver over a relatively long period of time in the event of a crash. Jordan's car, however, has airbags with older technology, and as a result they decelerate the driver over a short period of time when a crash happens. Drivers of which person's car will experience less force in a car crash?
++++++++++++++++++++++++++++++++
The answer is:
Timothy
input question: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella. Which sister didn't have an inflammation of the liver????
output answer: Bianca
Mike was preparing for his chemistry exam. To see the chemistry concepts in practice he conducted two tests, test A and test B. In test A he used two liquid reactants evenly dispersed, but in test B he used one liquid reactant and one solid reactant. He was surprised to see that two tests had very different results. Which test would have lower rate of reaction, test A or test B?
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Answer: test B
Q: Two groups of students learned about protozoa for a school project. Group P studied more about predatory protozoa, while group G studied about grazing and parasitic protozoa, plus portozoa as food sources. Which group learned less about protozoa that cause malaria?
A:
Group P