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: plasma is formed by electrons separating from atoms in stars, Fact2: Plasma exists inside stars and in interstellar gases., Question: What is formed by electrons separating from interstellar gases? (A) an object (B) Energy. (C) proteins (D) led lights (E) air (F) light (G) plasma (H) dust

Ex Output:
G


Ex Input:
Fact1: a mirror is used for reflecting light, Fact2: Light seems to travel in rays or beams., Question: what can a mirror be used to reflect? (A) noble gases (B) air particles (C) glass (D) focusing a lens (E) rays or beams (F) photons (G) sun's heat (H) an electron lens

Ex Output:
E


Ex Input:
Fact1: Neurons are the structural and functional units of the nervous system., Fact2: Botulism affects the nervous system., Question: Which of the following affects neurons? (A) nerves (B) voltage (C) Dehydration (D) electrically (E) heat (F) Botulism (G) fever (H) temperature

Ex Output:

F