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: Ancestors of hagfish are thought to have been the earliest vertebrates., Fact2: Property of ancestors and forefathers can only be legally inherited by sons., Question: Forefathers of what kind of fish are thought to be the earliest vertebrates? (A) hagfish (B) Pelycosaur (C) fish (D) angiosperm (E) adult (F) Therapsids (G) marine (H) aquatic

Output: A


Input: Consider Input: Fact1: harming an animal species has a negative impact on the population size of that species, Fact2: Sometimes hunting can impact animal populations., Question: What does hunting do to a species? (A) Plant growth is reduced (B) Decreases population (C) protect them (D) cause their death (E) Creates demand for the species (F) Strengthens the species (G) massive damage (H) Increases population

Output: B


Input: Consider Input: Fact1: a graduated cylinder is used to measure volume of a liquid, Fact2: Excess water was poured into a graduated cylinder and measured., Question: How do you calculate water? (A) they body they live in (B) With a scale (C) chemical equations (D) A graduated cylinder (E) A thermometer (F) Temperature (G) With a gauge (H) it's bodily water decreases


Output: D