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").

Fact1: Kidney failure may be treated with dialysis., Fact2: Renal failure means kidney failure., Question: What may renal failure be treated with? (A) Laboratory (B) Lymphocytes (C) saves lives (D) dialysis (E) Lymph fluid (F) dandelions (G) ibuprofen (H) Protein
D