You are answering a USMLE-style medical question. Question: A 72-year-old man in a nursing home was brought to the emergency department with right hand and leg weakness for 1 hour. There has been a gradual increase in the degree of weakness. The patient is disoriented. The medical history includes ischemic heart disease diagnosed 2 months ago, and long histories of diabetes and hypertension (30 and 25 years, respectively). On examination, the reflexes are hypertonic and the Babinski reflex is positive. The CT scan is shown. What is the most likely pathologic change? Options: A) Gangrenous necrosis B) Liquefactive necrosis C) Caseous necrosis D) Fibrinoid necrosis Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.