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").

[EX Q]: Fact1: Plants live just about everywhere on Earth., Fact2: Epiphytes are plants that live on other plants., Question: Where do epiphytes live? (A) swamp vegetation (B) mountains (C) vegetation (D) the environment (E) peachleaf willow (F) ice (G) rocks (H) everywhere on earth
[EX A]: H

[EX Q]: Fact1: Bivalves feed on plankton and nonliving organic matter., Fact2: Mussels are bivalve mollusks., Question: What feeds on plankton and nonliving organic matter? (A) barnacles (B) mollusks (C) animals (D) the Sun (E) sharks (F) graptolites (G) bacteria (H) dogs
[EX A]: B

[EX Q]: Fact1: whiskers are used for feeling by animals, Fact2: Another name for it is cat's whiskers., Question: What do cats have body parts for? (A) bone (B) antigens (C) flight (D) magic (E) feeling (F) tissue (G) adult (H) telekinesis
[EX A]:
E