This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Medicine
A 23-year-old individual who believes in megavitamins therapy develops severe headche, fundoscopy reveals papilloedema. The likely cause for this problem is - 
Select and explain. 
A. Vitamin B12 intoxication, B. Vitamin A intoxication, C. Vitamin E intoxication, D. Vitamin K intoxication
B: Vitamin A intoxication
Answer: B: Vitamin A intoxication 
Explanation: Vitamin A toxicity causes nausea ,increased intracranial pressure and Papilloedema due to high dose of retinol . Ref Harrison 20th edition pg 86