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").
Input: Fact1: Nephrons are the structural and functional units of the kidneys., Fact2: Each nephron has a glomerulus., Question: What is part of the kidney structure? (A) thorax (B) glomerulus (C) organ (D) arteries (E) layers of fat (F) more abundant (G) pancreas (H) urine
Output:
B