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
Main treatment of congenital laryngeal stridor is: 
Select and explain. 
A. Tracheostomy, B. Steroid therapy, C. Reassurance to the child's parents, D. Amputating epiglottis
C: Reassurance to the child's parents
Answer: C: Reassurance to the child's parents 
Explanation: (c) Reassurance to the child's parents(Ref. Current Diagnosis & Treatment Otolaryngology, Lalwani, 3rd ed., 483; Scott Brown, 8th ed., Vol 2; 334)