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: a flashlight converts chemical energy into light energy, Fact2: A joule is roughly the energy used by a flashlight turned on for one second., Question: What is converted in a flashlight? (A) hydrogen and oxygen (B) adding heat (C) an electron lens (D) hydrogen to water (E) chemicals to light (F) batteries into solar (G) heat into light (H) chlorofluorocarbons

Ex Output:
E


Ex Input:
Fact1: Plasma cells are activated B cells that secrete antibodies., Fact2: Antibodies are produced by plasma cells., Question: antibodies are produced by activated B cells that do what? (A) Animal survival (B) killing insects (C) interact (D) secrete them (E) migrate (F) reproduce (G) competition (H) Allergies

Ex Output:
D


Ex Input:
Fact1: Playing is just one of many ways that mammals and other animals learn how to behave., Fact2: Games are for fun, to play, and the folks there are a bunch of fun., Question: what is one way that mammals and other animals learn how to behave? (A) looseness (B) killing for sport (C) Riding a bike (D) Movement (E) exercise (F) watching sports (G) hitting rocks (H) games for fun

Ex Output:

H