Definition: 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").
Input: Fact1: astronauts require preserved food for extended flights, Fact2: Astronauts go out into space., Question: What do those who go out into space require for extended flights? (A) preserved food (B) fresh vegetables (C) Electrical energy (D) heat energy (E) food and shelter (F) Energy. (G) fresh fruits (H) luxury items
Output:
A