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: Orthopaedics
Hypervitaminosis of which of the following wil cause bony abnormalities: 
(A) Vit. A
(B) Vit. D
(C) Vit C
(D) Vit. E
(E) Vit. K 
Select and explain. 
A. Vit. A, B. Vit. D, C. Vit C, D. Vit. E
B: Vit. D
Answer: B: Vit. D 
Explanation: "Vit D excess increase intestinal calcium absorption & if severe ,also increase bone resorption 7 " - H17th/2387 “Vit.
A intoxication cause hypercalcemia & presumed to increase bone resorption Q - H17th/2387 Metabolic Bone Disease Q The common metabolic bone disease is associated
in varying degree with depletion of bone tissue or bone mineral & [in some cases) with systemic features of altered mineral metabolism The most common condition
fall into three groups: 1. Osteoporosis-in which the quantity of bone mass' 3 is abnormally low 2. Osteomalacia- in which the osseous connective tissue [osteoid) is present but
insufficiently mineralised' 3 3. Osteitis fibrosa- in which PTH overproduction leads to bone resorption 13 & replacement by fibrous tissue