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: a rainbow is formed by refraction of light by separating light into all different colors, Fact2: Introduction A rainbow is often given as an everyday example of a spectrum., Question: A spectrum is formed by refraction of light by separating light into all different what? (A) categories (B) dyes (C) photons (D) pigments (E) light (F) colors (G) Energy. (H) energy

Ex Output:
F

Ex Input:
Fact1: Wings are part of the exoskeleton and attached to the thorax., Fact2: Insect wings are attached to the dorsal side of their thorax., Question: What side of an insect are wings attached to? (A) white (B) dorsal (C) protected (D) abdomen (E) elytra (F) three (G) strong (H) tail

Ex Output:
B

Ex Input:
Fact1: Bone is less flexible than cartilage but stronger., Fact2: Sharks have a cartilage skeleton., Question: What are less flexible than shark skeletons but stronger (A) holding nutrients (B) tissue paper (C) calibrated (D) plant stems (E) close relatives of coral (F) regular skeletons (G) clay (H) dermal & vascular tissue

Ex Output:
F