Detailed Instructions: 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").
Problem:Fact1: Pneumonia may be caused by an infection or injury of the lungs., Fact2: Common bacterial pneumonia can be caused by Streptococcus pneumonia or Klebsiella pneumonia ., Question: injury of the lungs can be caused by what (A) running (B) wind and erosion (C) breathing (D) cigarettes (E) Pesticides (F) bacterial infection (G) smoking cigarettes (H) foggy air
Solution:
F