Given the task definition and input, reply with output. 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").

Fact1: when a river floods , that river deposits soil in flood plains, Fact2: Flood plains are generally marshy., Question: where is soil deposited when a river floods? (A) aqueous solution (B) near the shoreline (C) mountains (D) colder and wetter (E) the sky (F) Inches or fractions of inches. (G) deserts (H) generally marshy areas
H