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: Mutualism is a symbiotic relationship in which both species benefit., Fact2: Dogs and humans are symbiotic species., Question: what exists between dogs and humans? (A) mutualism (B) gravity (C) communication (D) antigens (E) several genes (F) space between (G) electrons (H) german shepherd

Ex Output:
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: vein deposits of gold and silver are formed by igneous intrusion, Fact2: Veins of Gold ore most commonly occur in cracks and fissures in igneous rocks., Question: Where are deposits of gold found? (A) In sediment (B) kalenchoes (C) fissures (D) rocks (E) mines (F) coral reefs (G) inactive (H) calcite

Ex Output:

C