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: skin is used for protecting the body from harmful substances, Fact2: Skin is the body's largest organ., Question: What can protect the body from harmful substances? (A) the body's largest organ (B) layers of fat (C) Electric devices (D) bones (E) sunburns (F) hard outer covering (G) deoxyribonucleic acid (H) muscle

Ex Output:
A


Ex Input:
Fact1: a glacier causes mechanical weathering, Fact2: Largest of the glacier-formed lakes is Karakul., Question: What can be formed by mechanical weathering? (A) NaCl (B) white (C) rock (D) tube (E) soils (F) Roads (G) Lakes (H) sand

Ex Output:
G


Ex Input:
Fact1: Feathers help birds fly and provide insulation., Fact2: Birds have bodies covered with feathers., Question: What is one reason birds have covered bodies? (A) To help them burrow (B) They have thick fur (C) layers of fat (D) To help them fly (E) To keep their body heat. (F) To attract predators (G) with their fur (H) To make them heavier

Ex Output:

D