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: Annelids are worms such as the familiar earthworm., Fact2: An earthworm has five hearts., Question: One example of an annelid has how many hearts? (A) three (B) Five (C) white (D) warm (E) four (F) strong (G) long (H) small

Ex Output:
B


Ex Input:
Fact1: satellites are used to take images from space, Fact2: Images of Earth taken from space., Question: Images of Earth are taken by (A) satellites (B) light (C) Communication (D) millions (E) radar (F) Plate tectonics (G) moving plates (H) lamphreys

Ex Output:
A


Ex Input:
Fact1: Mollusks are invertebrates such as the common snail., Fact2: Another common snail is the decollate snail., Question: What are decollate snails? (A) fertile (B) Insects (C) barnacles (D) Muscles (E) Oysters (F) homogenous (G) graptolites (H) Mollusks

Ex Output:

H