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: soil is formed by weathering, Fact2: Soil or dirt is a very heavy material., Question: a very heavy material is formed by what? (A) eating (B) weathering (C) Condensation (D) rainfall (E) calcite (F) seeding (G) burning (H) sanding
Output:
B