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: Hormones are chemical messengers that control many body functions., Fact2: Growth hormone is in many ways an anti-aging hormone., Question: What controls anti-aging? (A) A computer (B) air (C) chemical messengers (D) ice (E) an electric stove (F) Electrical energy (G) water (H) Chemical energy

Ex Output:
C


Ex Input:
Fact1: better senses have a positive impact on an animal 's survival, Fact2: All dogs are animals ., Question: what can have a positive impact on survival with better senses? (A) pugs (B) deer (C) pigs (D) mice (E) dog (F) cats (G) bird (H) cows

Ex Output:
E


Ex Input:
Fact1: Glucose is used for energy by the cells of most organisms., Fact2: For instance, glucose is a sugar., Question: what is used for energy by the cells of most organisms? (A) sugar (B) cell walls (C) Sun (D) Light (E) food (F) maples (G) nucleus (H) electrons

Ex Output:

A