Definition: 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: Caecilians can be found in moist soil near rivers and streams in tropical regions., Fact2: Caecilians are primitive amphibians that resemble earthworms., Question: what can be found in moist soil near rivers and streams in tropical regions? (A) the sun (B) bioaerosols (C) swamp vegetation (D) gravity (E) land fish (F) primitive amphibians (G) peachleaf willow (H) Most plants
Output:
F