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").
Q: Fact1: Bile reduces the acidity of food entering from the highly acidic stomach., Fact2: Bile , synthesized by the liver, contains HCO3-, bile salts and bile pigments., Question: What organ reduces the acidity of food entering from the highly acidic stomach? (A) tubular organ (B) potassium (C) enzymes (D) ibuprofen (E) flagella (F) intestinal (G) the liver (H) estrogen
A: 
G