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: Evolution occurs in response to a change in the environment., Fact2: Evolution Evolution is the changing pattern of life forms., Question: what happens in response to change in environment? (A) Plant growth is reduced (B) the wearing away of rock (C) lifeforms change their pattern (D) antimatter (E) density changes (F) Warm air moving into cold air (G) erosion from rivers (H) gravity changes

Ex Output:
C


Ex Input:
Fact1: Chromosomes are the form of the genetic material of a cell during cell division., Fact2: Mitosis is cell division., Question: Chromosomes are the form of the genetic material during  (A) plants (B) reproduce (C) condensation (D) mitosis (E) osmosis (F) complex (G) animals (H) respiration

Ex Output:
D


Ex Input:
Fact1: mechanical weathering is when rocks are broken down by mechanical means, Fact2: Water is a mechanical weathering force., Question: What  weathers rocks? (A) soil (B) streams (C) a delta (D) calcite (E) erosion (F) water (G) grass (H) the sun

Ex Output:

F