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: soil is formed by rocks eroding, Fact2: Rivers erode the rocks they flow over., Question: What is formed by rivers? (A) fish (B) soil (C) rain (D) bamboo (E) spring (F) clouds (G) kayaks (H) NaCl

Ex Output:
B


Ex Input:
Fact1: keeping food cold is used for keeping food fresh, Fact2: A refrigerator that keeps food cold., Question: What is a refrigerator used for? (A) Electrical energy (B) A place to hang magnets (C) Cooling your home (D) staying warm (E) A doorstop (F) electricity (G) energy usage (H) Keeping food fresh

Ex Output:
H


Ex Input:
Fact1: Fertilization takes place inside the female organism., Fact2: Fatty tissue in a woman's body produces female hormones., Question: Where does human fertilization naturally take place? (A) hard shelled egg (B) petri dish (C) bushes (D) man (E) Earth (F) eggs (G) woman (H) orchids

Ex Output:

G