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: Heterotrophs are living things that cannot make their own food., Fact2: All animals are heterotrophs., Question: what are living things that cannot make their own food? (A) hydrogen (B) clouds (C) animals (D) humans (E) bacteria (F) bushes (G) fungi (H) plants

Ex Output:
C


Ex Input:
Fact1: Pneumonia may be caused by an infection or injury of the lungs., Fact2: Lung injuries are treated with bronchodilatory treatment., Question: What treatment can be used in treating pneumonia? (A) the respiratory system (B) a breathing mask (C) bronchodilatory treatment (D) aqueous solution (E) immunotherapy (F) radiation therapy (G) immune system (H) chemotherapy

Ex Output:
C


Ex Input:
Fact1: Phytoplankton are bacteria and algae that use sunlight to make food., Fact2: Plants have a very clever way of using the energy from sunlight to make their food., Question: Phytoplankton have a clever way of making food from what? (A) sunlight energy (B) water energy (C) heat energy (D) heat produced (E) chemical energy (F) mechanical energy (G) organic matter (H) refraction of light

Ex Output:

A