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: the Himalayas were formed by rock folding, Fact2: If the rocks are not as brittle, they will either tilt or fold., Question: What is the consistency of the Himalayan rocks? (A) crust (B) Loose (C) simple (D) cold (E) loose soil (F) Smooth (G) liquid (H) Brittle

Ex Output:
H


Ex Input:
Fact1: a fire requires oxygen to burn, Fact2: In the vacuum of space, there's no oxygen to burn., Question: Where is fire impossible? (A) evaporation (B) In space (C) A computer (D) uncontrolled (E) Inside a car (F) On television (G) summer end (H) On a mountain

Ex Output:
B


Ex Input:
Fact1: treating water is used to remove harmful substances before drinking, Fact2: Ordinary tap water can be full of harmful substances like chlorine, pesticides and heavy metals., Question: What does treating water remove before drinking it? (A) direct damage to the lungs (B) h2o (C) an area swollen with pus (D) chlorine, pesticides, heavy metals (E) molecules (F) vapor (G) Mutagenic chemicals (H) nonliving organic matter

Ex Output:

D