You are answering a USMLE-style medical question. Question: A 78-year-old right-handed man is brought to the emergency department by his daughter for sudden onset speech changes. The patient lives with his daughter and was chatting with her when suddenly his speech became distorted with random and disconnected words that made no sense. He seems to be physically frustrated that no one understands him. Physical examination demonstrates weakness of the right arm. Damage to which location would best explain this patient’s symptoms? Options: A) Left frontal lobe B) Left temporal lobe C) Right frontal lobe D) Right temporal lobe Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.