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: being exposed to wind can cause erosion of soil, Fact2: Soil Erosion Soil erosion is caused by disturbance of a land surface., Question: what can being exposed to wind cause? (A) a lot of human deaths (B) death and devastation (C) increase in carbon (D) forest is destroyed (E) a tree falling (F) disturbance of land surface (G) loss of sunlight (H) low tides

Ex Output:
F


Ex Input:
Fact1: seeing requires light, Fact2: Sight is the mere ability to see, and the eye's responses to light shining into it., Question: What do eyes require? (A) a form of oxygen (B) Light shining into it (C) Exposure to oxygen and water (D) A dark environment (E) Contact lenses (F) melanin amount (G) tissue made of chondrocytes (H) Glasses

Ex Output:
B


Ex Input:
Fact1: telephones are used for communication by two people by transmitting sound, Fact2: Sound Sound waves are mechanical waves., Question: what do people transmit when using telephones for communication? (A) internet signals (B) diseases (C) fibers (D) SNPs (E) power (F) waves (G) energy (H) h2o

Ex Output:

F