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").

[EX Q]: Fact1: telephones are used for communication by two people by transmitting sound, Fact2: And the sound of their voice becomes important as well., Question: What is transmitted with telephones? (A) voice (B) copper (C) waves (D) smell (E) cancer (F) energy (G) HIV (H) power
[EX A]: A

[EX 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
[EX A]: C

[EX Q]: Fact1: Excretion is the process of removing wastes and excess water from the body., Fact2: Excretion occurs in the feces., Question: What removes wastes and excess water from the body? (A) solutes (B) vinegar (C) Balance (D) ice (E) blood (F) air (G) rivers (H) feces
[EX A]:
H