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: Sponges have specialized cells called collar cells., Fact2: Flagellum of collar cell cause current to pass over collar and food is collected., Question: Which aspect of a sponge's cells allow it to collect food? (A) the cervix (B) teeth (C) flagellum (D) cartilage (E) plasma (F) osculum (G) tissue (H) potassium

Ex Output:
C


Ex Input:
Fact1: cooking food requires adding heat energy, Fact2: Heat is essentially the source of energy., Question: Doing what to food requires adding the source of energy? (A) burning (B) burying (C) degrading (D) hydration (E) boiling (F) Light (G) sharing (H) cooking

Ex Output:
H


Ex Input:
Fact1: plasma is formed by electrons separating from atoms in stars, Fact2: Most of the matter in stars is in a plasma state., Question: where do electrons separate? (A) fields (B) stars (C) mitosis (D) cells (E) nucleus (F) tube (G) iron (H) shells

Ex Output:

B