Q: 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: Feathers help birds fly and provide insulation., Fact2: Penguins keep warm with layers of insulation., Question: Feathers help birds fly and what? (A) staying warm (B) keep warm (C) Absorb light (D) allow growth (E) keep birds (F) protect them (G) keep cool (H) keep grounded
A:
B