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: Mammals have a layer of fat under the skin to help insulate the body., Fact2: Glass insulation keeps beverage warm for hours., Question: What keeps mammals warm? (A) evaporation (B) Animal fur (C) staying warm (D) sweating (E) They have thick fur (F) with their fur (G) a layer of fat (H) Veins and arteries.

Ex Output:
G

Ex Input:
Fact1: pushing on the pedals of a bike cause that bike to move, Fact2: Bike shoes allow a rider to pull during the whole pedal stroke., Question: pushing with strokes on a bike cause that bike to what (A) Lift (B) bend (C) bounce (D) power (E) move (F) break (G) motion (H) speed

Ex Output:
E

Ex Input:
Fact1: Plants that shed their leaves seasonally each year are called deciduous plants., Fact2: Grapevines are woody deciduous plants., Question: Grapevines are plants that shed their leaves (A) Winter (B) during the day (C) Exfoliation (D) every season (E) on random occasion (F) seasonally (G) When it's cold (H) in no seasons

Ex Output:
F