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
The highest concentrations of Vitamin A is seen in - 
Select and explain. 
A. Polar bear liver, B. Cod liver oil, C. Shark liver oil, D. Papaya
B: Cod liver oil
Answer: B: Cod liver oil 
Explanation: Ans. is 'b' i.e., Codliver oil Amongst the given options, cod liver oil has highest concentration.