Teacher: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").
Teacher: Now, understand the problem? Solve this instance: Fact1: soil is formed by weathering, Fact2: Rocks breakdown by weathering., Question: What helps soil to form? (A) The planting of flowers (B) The breakdown of rocks (C) organic molecules (D) The changing of seasons (E) Organic compounds (F) swamp vegetation (G) evaporation (H) The movement of clouds
Student:
B