This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamin D, Subject name: Pediatrics
Earlier manifestation of Rickets is - 
Select and explain. 
A. Craniotabes, B. Rashitic rosary, C. Harrison groove, D. Pigeon chest
A: Craniotabes
Answer: A: Craniotabes 
Explanation: Ans. is A Craniotabes (Ref : O.P. Ghai, 6/e, p 127-129 (5/e, p 83), Nelson 17/e, p 187-189).C/f of RicketsUsually manifest in 1st or 2nd year, rare below 3 months.Craniotabes is the earliest manifestation of Rickets.Large Anterior fontanelle*.Bossing of frontal and parietal bones.Rachitic rosary* (Costochondral function prominent).Pigeon Breast* (Sternum projects forward)Harrison's groove *Scoliosis * kyphosis or lordosis can occur.Epiphysis of long bones widened*.Anterior bowing of legs, knock knee and coxa vera*.