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: Social & Preventive Medicine
Milk is a poor source of which of the following ? 
Select and explain. 
A. Essential fatty acids, B. Iron, C. Vitamin C, D. Vitamin A
C: Vitamin C
Answer: C: Vitamin C 
Explanation: None