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: Earthworms are important deposit feeders that help form and enrich soil., Fact2: Earthworms Earthworms are in the phylum Annelids., Question: What do annelids enrich? (A) magma (B) seeds (C) soil (D) Energy (E) food (F) water (G) moss (H) roots

Ex Output:
C


Ex Input:
Fact1: telephones are used for communication by two people by transmitting sound, Fact2: Cell phones are, bottom line, radios with a connection to a telephone company., Question: What are used for two people for communication with sound? (A) cell phones (B) messengers (C) energy (D) megaphones (E) A Greek letter (F) flashlights (G) gramophones (H) electricity

Ex Output:
A


Ex Input:
Fact1: Many plants respond to the days growing shorter in the fall by going dormant., Fact2: Plants are dormant in the winter., Question: What causes plants to sleep? (A) winter (B) heat (C) lmestone (D) sweating (E) photons (F) Sun (G) Light (H) air cools

Ex Output:

A