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: sand dunes are formed by the wind transporting and depositing sand, Fact2: Desert Dunes Desert sand dunes occur in an amazing diversity of forms., Question: deserts are a location where wind transport can deposit what (A) plant (B) rocks (C) crust (D) grains (E) money (F) sand (G) matter (H) soils
Output:
F