<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A six-month-old male presents to the pediatrician for a well-child visit. His mother reports that the patient has just started eating solids and sleeps well throughout the night. She notes that she often puts the patient to sleep on his stomach because he seems to breathe more easily in that position. The patients mother has noticed that the patients breathing becomes more strained when lying on his back. She cannot remember when this problem began, but she believes it has gotten worse in recent weeks. The patient was born at 40 weeks gestation and has no other past medical history. The patients temperature is 98.0F 36.7C, blood pressure is 7555 mmHg, pulse is 115min, and respirations are 24min. His oxygen saturation is 98 on room air. On physical exam, the patient appears comfortable and has inspiratory stridor that improves while leaning forward. His lungs are otherwise clear to auscultation bilaterally. Which of the following is the most likely cause of this patients respiratory symptoms?? A: Epiglottitis, B: Foreign body aspiration, C: Laryngomalacia, D: Laryngotracheitis, E: Vascular ring,  <response>: This is a clinical vignette about a 6-month-old male infant presenting with inspiratory stridor that improves with leaning forward. The key findings are:- 6-month-old male - Started eating solids recently- Mother notices strained breathing when lying on back, worse in recent weeks- No past medical history- Normal vital signs- Oxygen saturation 98 on room air- Inspiratory stridor that improves with leaning forward- Lungs clear on auscultationBased on the age, lack of fever, and stridor that improves with leaning forward, the most likely diagnosis is laryngomalacia. Epiglottitis, foreign body aspiration, laryngotracheitis, and vascular ring are less likely based on the clinical presentation.C: Laryngomalacia 