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: Pediatrics
Vitamin D deficiency is manifested as: September 2005 
Select and explain. 
A. Scurvy, B. Night blindness, C. Beri-Beri, D. Rickets
D: Rickets
Answer: D: Rickets 
Explanation: Ans. D: RicketsRickets, a childhood disease characterized by impeded growth, and deformity, of the long bones which can be caused by calcium or phosphorus deficiency as well as a lack of vitamin D.The dietary risk factors for rickets include abstaining from animal foods.Vitamin D deficiency remains the main cause of rickets among young infants in most countries, because breast milk is low in vitamin D and social customs and climatic conditions can prevent adequate UVB exposure.Osteomalacia, occurs exclusively in adults and is characterized by proximal muscle weakness and bone fragility.