This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolic Disorders, Subject name: Pediatrics
Earliest sign of rickets is: 
Select and explain. 
A. Rickety rosary, B. Craniotabes, C. Boe legs, D. Harrison's groove
B: Craniotabes
Answer: B: Craniotabes 
Explanation: Ans: bRef: Pedia ghai, 6th ed, p. 128