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: Birds evolved from a group of bipedal dinosaurs called theropods., Fact2: All hawks are birds., Question: What evolved from a group of bipedal dinosaurs called theropods? (A) alpacas (B) bacteria (C) hawks (D) vision (E) humans (F) animals (G) mammals (H) viruses

Ex Output:
C


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: Petals attract pollinators to the flower., Fact2: Petals are great for potpourri or for making rose petal jelly., Question: What attracts pollinators to the flower? (A) something great for potpourri (B) Something with a head, thorax, and abdomen (C) peachleaf willow (D) By wind and rain (E) photosynthesis. (F) Something made from fermented ricce (G) Earth revolving around the sun (H) at or near the margins

Ex Output:

A