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: Medicine
Richest source of Essential fatty acids 
Select and explain. 
A. Safflower oil, B. Corn oil, C. Sunflower oil, D. Soyabean oil
A: Safflower oil
Answer: A: Safflower oil 
Explanation: Safflower oil contains 73% linoleic acid. 
Sunflower oil - 56%.
Corn oil  - 57%.