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: Migrants typically travel long distances., Fact2: Migrant birds arrive., Question: What travels long distances? (A) humans (B) jets (C) rocks (D) birds (E) camels (F) cocoons (G) Light (H) eggs

Ex Output:
D


Ex Input:
Fact1: Playing is just one of many ways that mammals and other animals learn how to behave., Fact2: Acting is about behaving., Question: What is one of the ways that mammals and other animals learn how to act? (A) sleeping (B) Movement (C) mating (D) exercise (E) eating (F) sound (G) playing (H) motion

Ex Output:
G


Ex Input:
Fact1: if the amount of available food and water decreases in an environment then animals may leave that environment to find food and water, Fact2: Many animals migrate, traveling to avoid bad weather, to find food, or to reproduce., Question: When food and water decreases, what increases? (A) energy usage (B) heat energy (C) Migration (D) Temperature (E) Pollution (F) forces (G) root growth (H) deforestation

Ex Output:

C