question: Q:A 70-year-old chronic smoker presents to the emergency department with a sudden onset of left-sided weakness. The past medical history is insignificant except for hypertension, for which he has been taking medications regularly. The vital signs include: blood pressure 165/110 mm Hg, pulse rate 78/min, respiratory rate 18/min, and temperature 36.1°C (97°F). The neurologic examination shows ⅗ muscle strength in the left upper and lower limbs. An occlusion of a branch of the right middle cerebral artery is suspected because the CT fails to show signs of hemorrhage. The HbA1C is 11%. Which of the following blood lipid components is the most important contributing factor leading to his condition?? 
  {'A': 'Very low-density lipoprotein (VLDL)', 'B': 'Chylomicron', 'C': 'Oxidized low-density lipoprotein (ox-LDL)', 'D': 'Lipoprotein lipase (LPL)', 'E': 'High-density lipoprotein (HDL)-cholesterol'},