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: Mammals can also generate little bursts of heat by shivering., Fact2: Polar bears are mammals., Question: What can generate little bursts of heat by shivering? (A) alpacas (B) bacteria (C) animals (D) polar bears (E) phytoplankton (F) rabbit (G) viruses (H) humans
Example Output: D

Example Input: Fact1: Climate is generally described in terms of temperature and moisture., Fact2: Humidity is a measure of moisture content of air., Question: Climate is generally described in terms of temperature and what? (A) humidity (B) wind (C) warmer air (D) calibrated (E) percentages (F) matter (G) skin color (H) SI units
Example Output: A

Example Input: Fact1: Roots have primary and secondary meristems for growth in length and width., Fact2: Rulers are used to measure length., Question: The growth in what comes from primary and secondary meristems can be measured with a ruler? (A) bushes (B) years (C) Trees (D) three (E) roots (F) bamboo (G) rings (H) a prism
Example Output:
E