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: safety goggles are used for protecting the eyes during experiments, Fact2: Firm plastic eyeglasses or goggles are better., Question: What protects the eyes during experiments? (A) magnesium (B) Chemicals (C) Vibrissae (D) Type O (E) Rolex (F) plastic (G) water (H) wind

Ex Output:
F


Ex Input:
Fact1: RNA is a small molecule that can squeeze through pores in the nuclear membrane., Fact2: Like proteins, DNA and RNA are polymers of various small chemically related molecules., Question: polymers of various small chemically related molecules can squeeze through pores in the what? (A) protein channel (B) transportation (C) nuclear membrane (D) interior chambers (E) nucleus (F) dermal & vascular tissue (G) cell division (H) Microscopic vessels.

Ex Output:
C


Ex Input:
Fact1: uneven heating of the Earth 's surface cause wind, Fact2: Wind is air that is moving., Question: what does uneven heating of Earth's surface cause? (A) kinetic energy (B) global warming (C) erosion (D) moving air (E) sweating (F) contamination (G) to move people (H) flooding

Ex Output:

D