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: Marine species live mainly in shallow coastal waters., Fact2: Killer whales prefer shallow and colder coastal waters., Question: What are killer whales? (A) red and black (B) They have thick fur (C) dangerous (D) sharks (E) deep sea creatures (F) marine species (G) Absorb light (H) animals

Ex Output:
F


Ex Input:
Fact1: Biomass is the total mass of organisms at a trophic level., Fact2: Producers make up the first trophic level, primary consumers the second, and so on., Question: What is the total mass of primary consumers (A) Plants (B) animals (C) food (D) Mountains (E) Biomass (F) decreases (G) all matter (H) Weight

Ex Output:
E


Ex Input:
Fact1: exercise increases a body 's strength, Fact2: Exercise promotes the formation of more mitochondria., Question: The formation of more mitochondia does what? (A) increases a body's strength (B) lowered energy cost (C) absorb light energy (D) Plant growth is reduced (E) They grow better (F) to move people (G) Help plants grow (H) duplicate itself

Ex Output:

A