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: Food consists of organic molecules that store energy in their chemical bonds., Fact2: If an molecule contains carbon, it is called organic., Question: What does food consist of? (A) mostly carbon (B) solid, liquid, gas (C) mostly arsenic (D) mostly hydrogen (E) Energy. (F) mostly nitrogen (G) glucose (H) Most plants

Ex Output:
A


Ex Input:
Fact1: hydropower requires damming a river, Fact2: Another source of energy is hydropower., Question: What is a source of energy? (A) fossil fuels (B) cooking (C) damming a river (D) sleeping (E) napping (F) Electrical energy (G) our nearest star (H) sunlight

Ex Output:
C


Ex Input:
Fact1: Mutation creates new genetic variation in a gene pool., Fact2: Influenza viruses mutate., Question: What can achieve new genetic variation in its gene pool? (A) competition (B) Most plants (C) rocks (D) A computer (E) influenza viruses (F) nothing (G) peachleaf willow (H) dust

Ex Output:

E