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: Male dogs use pheromones in urine to mark their territory., Fact2: Pheromones are natural aphrodisiacs., Question: What do male dogs use in urine to mark their territory? (A) Natural aphrodisiacs (B) competing for resources (C) Tails (D) Urine  cleaner (E) Something coming from a gland (F) Chemical energy (G) an area swollen with pus (H) Chew toys

Ex Output:
A


Ex Input:
Fact1: bacteria can cause people to become ill, Fact2: People frequently die of illnesses ., Question: What can cause people to die? (A) viruses (B) Dehydration (C) stars (D) smallpox (E) bacteria (F) clouds (G) flooding (H) Saturn

Ex Output:
E


Ex Input:
Fact1: absorbing energy causes objects to heat, Fact2: Energy enters an ecosystem as sunlight., Question: What causes an object to heat? (A) absorption (B) photosynthesis (C) electricity (D) rays or beams (E) colors of the spectrum (F) absorbing sunlight (G) absorbing ions (H) It gets heated up

Ex Output:

F