This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
Fish is deficient in which of the following nutrients? 
Select and explain. 
A. Iron, B. Iodine, C. Vitamin A, D. Phosphorous
A: Iron
Answer: A: Iron 
Explanation: Fish are less in iron. The fat of fish is Rich in vitamin A and D. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 582