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").
Q: Fact1: Nephrons are the structural and functional units of the kidneys., Fact2: Each nephron has a glomerulus., Question: things that have a what are the structural units of the kidneys? (A) organ (B) epidermal (C) critical organs (D) it needs them (E) bioaerosols (F) sensory neurons (G) glomerulus (H) layers of fat
A:
G