You are answering a USMLE-style medical question. Question: A 74-year-old man was admitted to the hospital after falling down several stairs. He is a known alcoholic. He was started on IV fluids and received a head CT, which was negative. It was decided that he would be watched for one day before being discharged, after a negative work-up. Suddenly, he is unable to move his arms and legs in addition to experiencing difficulty chewing, swallowing, moving his face, and speaking. Which of the following electrolyte imbalances was most likely corrected too aggressively? Options: A) Hyponatremia B) Hypernatremia C) Hypokalemia D) Hypochloremia Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.