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: Consider Input: Fact1: Ants communicate with chemicals called pheromones., Fact2: Ants use receptors on their antennae to follow recruitment pheromone trails., Question: What do ants use to communicate? (A) nerves (B) heat energy (C) sound (D) binary code (E) light energy (F) Antennae. (G) megaphones (H) hand signals

Output: F


Input: Consider Input: Fact1: Mollusks live in most terrestrial, freshwater, and marine habitats., Fact2: Interestingly, a squid is also a mollusk., Question: What can live in marine habitats? (A) lizards (B) horses (C) elephants (D) fur seals (E) a fish (F) squids (G) barnacles (H) animals

Output: F


Input: Consider Input: Fact1: Cells are the microscopic building blocks of organisms., Fact2: Proteins are the building blocks of living cells., Question: What are proteins the building blocks of? (A) Plants growth (B) athletes (C) cell walls (D) cytoplasm (E) humans (F) organisms (G) health (H) atoms


Output: F