In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

[Q]: Fact1: when a body of water receives more water than it can hold , a flood occurs, Fact2: Flood probability is based on past floods., Question: How do we determine the probability of receiving more water than a body can hold? (A) evaporation (B) climate (C) The past (D) watershed (E) Dilution (F) energy usage (G) Temperature (H) salinity
[A]: C

[Q]: Fact1: a greenhouse is used to protect plants by keeping them warm, Fact2: Flower size varies by plant., Question: How does a greenhouse protect flowers? (A) keeps them away from the sun (B) keeps them warm (C) keeps them out of soil (D) an external framework (E) it needs them (F) keeps them cold (G) rays or beams (H) by indirect light
[A]: B

[Q]: Fact1: Viruses infect and live inside the cells of living organisms., Fact2: If the virus is nonenveloped it is released by lysing the host cell., Question: Viruses first infect, then they release into the host by doing what? (A) Cooking (B) kill them (C) harm them (D) lysing (E) illness (F) fever (G) migrate (H) propagate
[A]:
D