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").

Input: Consider Input: Fact1: Evolution occurs by a process called natural selection., Fact2: Adaptation is the result of natural selection., Question: What leads to evolution? (A) Plants growth (B) competition (C) Adatation (D) our star (E) Experimentation (F) Stagnation (G) environment (H) Information

Output: C

Input: Consider Input: Fact1: Urine is the liquid waste product of the body that is excreted by the urinary system., Fact2: Mammals excrete urea in the watery form of urine ., Question: What is a waste product of the body that is excreted by the urinary system? (A) potash (B) food (C) CO 2 (D) sugar (E) urea (F) liquid (G) H 2 O (H) sulfur

Output: E

Input: Consider Input: Fact1: Antigens are molecules that the immune system recognizes as foreign to the body., Fact2: Bodies are physical entities., Question: What are molecules that the immune system recognizes as foreign to the physical entity? (A) bacteria (B) proteins (C) antibodies (D) Allergies (E) negative (F) immunities (G) parasites (H) antigens
Output: H