This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2018, Subject name: Biochemistry
Which of the following vitamin increases the absorption of iron? 
Select and explain. 
A. Vitamin A, B. Vitamin C, C. Thiamin, D. Riboflavin
B: Vitamin C
Answer: B: Vitamin C 
Explanation: iron absorption - Increase iron absorption Decrease iron absorption Vitamin C Cysteine In iron deficiency anemia iron absorption increase by 2-10 times Small peptides and amino acid Phytate (found in cereals) oxalate (found in leafy vegetable) diet with high phosphate content malabsorption syndromes such as steatorrhea In patients with paial or total surgical removal of stomach and/or intestine Vitamin C and Cysteine conve ferric iron to ferrous iron. Ferrous iron is soluble and easily absorbed.