Instructions: 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: erosion causes a river to become deeper and wider, Fact2: Clearing of land can lead to erosion of soil into the river., Question: what makes a river wider? (A) rainfall (B) salinity (C) arteries (D) flow of electrons (E) Water expanding (F) Physical weathering (G) a hydraulic system (H) clearing land
Output:
H