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 Input:
Fact1: Bottleneck effect occurs when a population suddenly gets much smaller., Fact2: Fishing pressure is relatively low due to a smaller human population., Question: What can make the bottleneck effect occur in fish? (A) increased habitat (B) acid rain (C) humans (D) Winter (E) increased food (F) storms (G) increased resources (H) Toxicity

Ex Output:
C

Ex Input:
Fact1: Cell division is how organisms grow and repair themselves., Fact2: Cell division is by mitosis ., Question: What is required by division? (A) voltage (B) Microscope (C) loose soil (D) Energy. (E) Energy (F) relocation (G) warmth (H) mitosis

Ex Output:
H

Ex Input:
Fact1: Flagella help prokaryotes move., Fact2: Flagella are long filaments made up of the protein flagellin., Question: What moves with long filaments? (A) prokaryotes (B) sponges (C) an object (D) lizards (E) protein (F) sensory neurons (G) insects (H) Most plants

Ex Output:
A