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
Maximum iron is in which nut ? 
Select and explain. 
A. Pista, B. Cashew, C. Peanut, D. Walnut
A: Pista
Answer: A: Pista 
Explanation: parks textbook of preventive and social medicine 23rd edition. *among the commonly used nuts ,cashewnut and almonds are good source of iron,but pistachio is the richest containing 14mg of iron per 100g .