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: Many corals secrete an exoskeleton that builds up to become a coral reef., Fact2: Good examples are Bubble coral, Elegance coral, Frogspawn and other Euphyllia corals., Question: What is secreted by organisms like frogspawn to become a reef? (A) exocrine glands (B) food and shelter (C) exoskeleton (D) bones (E) Energy (F) Chemical energy (G) plasma (H) Energy.

Ex Output:
C


Ex Input:
Fact1: Ejaculation occurs when muscle contractions propel sperm from the epididymes., Fact2: Male orgasm and ejaculation are inhibited., Question: In the male orgasm, where is sperm propelled from? (A) seeds (B) pollen (C) distance (D) organ (E) sensory neurons (F) direct energy (G) epididymes (H) electrically

Ex Output:
G


Ex Input:
Fact1: cross-pollination increases genetic diversity, Fact2: Evolution requires genetic diversity., Question: What does evolution require? (A) Time and energy (B) Plant reproduction (C) cross-pollination (D) Reproduction (E) gene flow (F) coded genes (G) circulatory systems (H) animals with backbones

Ex Output:

C