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: Molecules of DNA are encoded with instructions that tell cells what to do., Fact2: Genes, made of DNA, carry the instructions for building proteins., Question: what do genes carry? (A) pollen (B) Energy (C) calories (D) instructions (E) Chemical energy (F) fat (G) acid (H) colors

Ex Output:
D


Ex Input:
Fact1: water causes refraction of light, Fact2: Halos are produced by the refraction of light., Question: What causes halos? (A) germs (B) Pacific (C) solutes (D) water (E) storms (F) glass (G) algae (H) the sun

Ex Output:
D


Ex Input:
Fact1: bees convert nectar into honey, Fact2: Nectar is in flowers, trees and hummingbird feeders., Question: Where can bees find the materials needed to make honey? (A) heated by the sun (B) occurs over a wide range (C) trees and flowers (D) buildings (E) hives (F) leaves (G) 70-75 degrees Fahrenheit (H) interior chambers

Ex Output:

C