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: astronauts require preserved food for extended flights, Fact2: Most of the Shuttle foods are preserved by dehydration, which saves weight and storage space., Question: astronauts require what food for extended flights? (A) Echinoderm. (B) layers of fat (C) dehydrated (D) fresh (E) hand picked (F) nutrients (G) frozen (H) hydration

Ex Output:
C


Ex Input:
Fact1: global warming is when worldwide temperature increases, Fact2: Mass extinction occurs in the ice age and global warming periods., Question: When worldwide temperature increases, mass what occurs? (A) extinction (B) deforestation (C) carbon (D) ice age (E) living (F) movement (G) It decreases (H) Pollution

Ex Output:
A


Ex Input:
Fact1: Plants exhibit phototropism, or growing toward a light source., Fact2: Light comes from the sun., Question: What is plant's tendency to grow toward the sun called? (A) photomorphism (B) phototropism (C) photosynthesis (D) peachleaf willow (E) Conifers (F) Exfoliation (G) vegetation (H) photochromic

Ex Output:

B