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").
Q: Fact1: rocks interacting with wind over long periods of time causes weathering, Fact2: Erosion happens when water or wind wears away bits of rock., Question: what causes weathering over long periods of time? (A) rocks (B) coastlines (C) respiration (D) alluvial (E) erosion (F) loose soil (G) rainfall (H) perspiration
A:
E