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
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Q: Fact1: decomposition increases amount of organic matter in soil, Fact2: Fungi are involved in decomposition, as well., Question: What can help increase the amount of organic matter in soil?  (A) Fungi (B) mussels (C) pine (D) worms (E) animals (F) Enzymes (G) solutes (H) trees

A: A
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Q: Fact1: Pneumonia may be caused by an infection or injury of the lungs., Fact2: Common bacterial pneumonia can be caused by Streptococcus pneumonia or Klebsiella pneumonia ., Question: injury of the lungs can be caused by what (A) running (B) wind and erosion (C) breathing (D) cigarettes (E) Pesticides (F) bacterial infection (G) smoking cigarettes (H) foggy air

A:
F
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