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: matter vibrating can cause sound, Fact2: All matter emits vibrations., Question: What kind of matter can produce sound? (A) sensory neurons (B) all matter (C) an object (D) only liquids (E) mechanical (F) only plasma (G) only solids (H) waves

Ex Output:
B


Ex Input:
Fact1: an egg requires warmth to survive, Fact2: First the frog lays the eggs, then the warmth from the sun makes the eggs hatch into baby tadpoles., Question: what keeps eggs warm? (A) ice (B) hair (C) wool (D) bears (E) fur (F) sun (G) moss (H) sand

Ex Output:
F


Ex Input:
Fact1: Plants that shed their leaves seasonally each year are called deciduous plants., Fact2: Ginkgo biloba is deciduous., Question: What does Ginkgo biloba do seasonally? (A) migrate (B) Exfoliation (C) Falls (D) Moves (E) Sheds leaves (F) Sheds bark (G) reproduce (H) staying warm

Ex Output:

E