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: Butter is a fat that is a solid at room temperature., Fact2: Some fats are more likely to cause heart disease., Question: What can butter lead to? (A) Heart disease (B) air pollution (C) reproduction (D) destruction (E) religion (F) trees (G) heating (H) Tooth pain
[EX A]: A

[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: Infancy is the period of most rapid growth after birth., Fact2: Communication begins in infancy., Question: what begins in the period of most rapid growth after birth (A) pregnancy (B) prokaryotic cells (C) Flowers (D) facial hair (E) Communication (F) flagella (G) trees and flowers (H) hair loss
[EX A]:
E