You are answering a USMLE-style medical question. Question: A 35-year-old male presents to the emergency department for evaluation of hemoptysis. A chest X-ray reveals bilateral focal pulmonary consolidation. On further questioning, he admits having hematuria. Urinalysis shows RBC casts and 400 mL of urine is excreted in 24 hours. What is the most likely cause of hemoptysis and hematuria in this patient? Options: A) Anti-Smith antibodies B) Anti-neutrophil antibodies C) Anti-mitochondrial antibodies D) Anti-glomerular basement membrane antibodies Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.