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: Viruses cause many human diseases., Fact2: Some smallpox viruses are maintained in laboratories., Question: What can smallpox cause? (A) contamination (B) harmful substances (C) vaccines (D) photosynthesis (E) extinction (F) cellular respiration (G) Destroy crops (H) human disease

Ex Output:
H


Ex Input:
Fact1: Cells are the basic units of the structure and function of living things., Fact2: Tigers are the largest of the living cats., Question: Cells are the basic units of the structure and function of what? (A) water (B) mammals (C) ice (D) tigers (E) animals (F) humans (G) plants (H) the Sun

Ex Output:
D


Ex Input:
Fact1: a circle graph can be used to display percents, Fact2: Description Makes a circle graph, also known as a pie chart, of data in a list., Question: What can pie charts be used to display? (A) percents (B) Cladistics (C) film reels (D) antigens (E) Phylogeny (F) venn diagrams (G) several (H) chemistry

Ex Output:

A