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: Unknown
An infant presents with lethargy, frontal bossing and bowing of legs.  X-ray shows widening of epiphysis.  What is the diagnosis? 
Select and explain. 
A. Scurvy, B. Rickets, C. Osteomalacia, D. Osteopetrosis
B: Rickets
Answer: B: Rickets 
Explanation: (Refer: Nelson’s Textbook of Paediatrics, 19th edition, pg no:199)