This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Which vitamin is also antioxidant 
Select and explain. 
A. Vitamin C, B. Vitamin D, C. Vitamin B3, D. Vitamin B2
A: Vitamin C
Answer: A: Vitamin C 
Explanation: Antioxidant vitamins are: Vitamin C, Vitamin E, Beta Carotene.