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: Platypus females lay their eggs in a burrow., Fact2: Examples of monotremes are the Platypus and Echidna., Question: What is the distinguishing feature of monotremes? (A) They lay eggs (B) the eyes (C) Veins and arteries. (D) eardrum (E) four limbs (F) layers of fat (G) They have thick fur (H) fur and fat
Output:
A