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").

Example 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
Example Output: F

Example Input: Fact1: Differentiation is the process by which unspecialized cells become specialized., Fact2: T helper cells differentiate to Memory cells and effector cells., Question: memory cells and effector cells are what compared to T helper cells (A) dermal & vascular tissue (B) antibodies (C) fetal development (D) antigens (E) occurs over a wide range (F) prokaryotic cells (G) unicellular organisms (H) more specialized
Example Output: H

Example Input: Fact1: preventing the transfer of heat from an organims 's body causes that organism to keep warm, Fact2: Heat is a manifestation of energy., Question: Preventing the transfer of energy from an organism's body does what? (A) exposure to cold (B) depress neuronal excitability (C) makes the organism cold (D) keeps the organism warm (E) makes the organism live longer (F) To avoid death (G) makes the organism hungry (H) protect them
Example Output:
D