This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: vitamins, Subject name: Biochemistry
Which of the following vitamin enhances absorption of iron? 
Select and explain. 
A. Vitamin K, B. Vitamin C, C. Vitamin B1, D. Folic acid
B: Vitamin C
Answer: B: Vitamin C 
Explanation: Vitamin Functions Deficiency Disease C Coenzyme in hydroxylation of proline and lysine in collagen synthesis Antioxidant Enhances absorption of iron Scurvy--impaired wound healing, loss of dental cement, subcutaneous hemorrhage Reference: Harper; 30th edition; Page no: 550