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: better senses have a positive impact on an animal 's survival, Fact2: Dolphins have an additional sense called echolocation., Question: What has a positive impact on an animal's survival? (A) human hunting (B) echolocation (C) peachleaf willow (D) a lack of human aid (E) four limbs (F) a band aid (G) sensory neurons (H) genetic diversity
Output:
B