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: Some viruses can cause cancer., Fact2: Cervical cancer is caused by a virus, the human papaloma virus., Question: What is responsible for cervical cancer? (A) lmestone (B) Hemoglobin (C) alleles (D) A virus (E) chemicals (F) cigarettes (G) ovaries (H) smoking

Ex Output:
D

Ex Input:
Fact1: predicting weather requires studying weater, Fact2: Meteorologists try to predict the weather., Question: What do meteorologists study? (A) Meatballs (B) amount of heat (C) Meteors (D) The weather. (E) related organisms (F) Music (G) air masses (H) Seisometers

Ex Output:
D

Ex Input:
Fact1: cycles of freezing and thawing water cause ice wedging, Fact2: Temperature change and ice wedging help to make soil., Question: Cycles of freezing and thawing water help to make (A) soil (B) power (C) ice (D) cracks (E) Winter (F) rocks (G) biome (H) warmth

Ex Output:
A