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").
Q: Fact1: Earth 's magnetic patterns are used for finding locations by animals that migrate, Fact2: Spring and fall migrations of birds and fish animate the landscape., Question: what is Earth's magnetic patterns used for finding the locations of? (A) deuterostomes (B) Continents drifting (C) bullfrogs (D) food and shelter (E) Males and females (F) one celled organisms (G) important habitats (H) birds and fish
A:
H