This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital Lesions and Stridor, Subject name: ENT
Most common cause of intermittent stridor in a 10 days old child is: 
Select and explain. 
A. Laryngomalacia, B. Foreign body, C. Vocal nodule, D. Hypertrophy of turbinate
A: Laryngomalacia
Answer: A: Laryngomalacia 
Explanation: (a) Laryngomalacia(Ref. Current Diagnosis & Treatment Otolaryngology, Lalwani, 3rd ed., 481; Scott Brown, 8th ed., Vol 2; 333)Rest of the options are not valid in a 10 days old neonate.