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
All of the following are sources of vitamin A except: 
Select and explain. 
A. Egg, B. Milk, C. Sunflower seeds, D. Tomato
C: Sunflower seeds
Answer: C: Sunflower seeds 
Explanation: Ans. is 'c' i.e., Sunflower seeds