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: a plants require water for survival, Fact2: Water contains hydrogen and oxygen., Question: What do plants require for their survival? (A) Light (B) Proteins (C) Energy. (D) salinity (E) hydrogen (F) nutrients (G) sunlight (H) food
Example Output: E

Example Input: Fact1: if gas is heated then that gas will expand, Fact2: An increase in temperature causes a gas to expand., Question: what affects a gas? (A) electricity (B) kinetic energy (C) temperature (D) Evaporation (E) salinity (F) Pollution (G) wind (H) magnetism
Example Output: C

Example Input: Fact1: touch can be used for detecting texture, Fact2: Nerve endings in the dermis are the source of the body's sense of touch., Question: Nerve endings in what part of the body can be used for detecting texture? (A) humans (B) small (C) the dermis (D) femur (E) follicles (F) animals (G) clavicle (H) some mammals
Example Output:
C