What is the role of vitamin C in iron absorption, and which meal components can inhibit iron absorption?

• A. Vitamin C reduces iron absorption; inhibitors include citrus and iron supplements
• B. Vitamin C enhances non-heme iron absorption; inhibitors include phytates, calcium, polyphenols, and caffeine when consumed with iron-rich meals
• C. Vitamin C has no effect; inhibitors include water
• D. Vitamin C destroys iron; inhibitors include iron-rich meals

Answer: (B)