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
Abnormalities of bone metabolism is associated with excess of which vitamins 
Select and explain. 
A. Vitamin A, B. Thiamine, C. Vitamin B12, D. All
A: Vitamin A
Answer: A: Vitamin A 
Explanation: Answer is A (Vitamin A ): Hypercalcemia is associated with Vitamin A intoxication due to increased / high bone turnover and Vitamin D intoxication.