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 Input:
Fact1: smell is used for finding food by some animals, Fact2: Olfaction is the sense of smell., Question: What do some animals use to find food? (A) Echinoids (B) breakfast (C) time travel (D) Energy (E) streams. (F) heat energy (G) nature (H) olfaction

Ex Output:
H

Ex Input:
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 Output:
C

Ex Input:
Fact1: nerves can be used to feel heat and pressure on the skin, Fact2: How peripheral nerves work Peripheral nerves are made of bundles of nerve fibres, which can be regarded as living telephone wires., Question: What can be used to feel heat and pressure on the skin? (A) 2 substances rubbing together (B) Something that comes in a bundle of fibers (C) several different ways (D) surfaces rubbing together (E) series of enzyme-mediated reactions (F) flow of electric charge (G) depress neuronal excitability (H) Material carrying electricity

Ex Output:
B