This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inflammation & Repair, Subject name: Pathology
[{'content': 'A 25-year-old woman sustains a deep, open laceration over her right forearm in a motorcycle accident. The wound is cleaned and sutured. During the next 3 months, the wound heals with formation of a linear scar. Which of the following nutritional factors is required for proper collagen assembly in the scar tissue of the patient? \nSelect and explain. \nA. Folic acid, B. Thiamine, C. Vitamin A, D. Vitamin C', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Vitamin C. Vitamin C (ascorbic acid) is a powerful, biologic reducing agent that is necessary for the hydroxylation of proline residues in collagen. Most of the clinical features associated with vitamin C deficiency (scurvy) are caused by the formation of an abnormal collagen that lacks tensile strength. Patients with vitamin C deficiency exhibit poor wound healing. Dehiscence (bursting open) of previously healed wounds may also occur. None of the other choices are required for collagen assembly.Diagnosis: Wound healing', 'role': 'assistant'}]