<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 1-month-old infant is brought to the physician for a well-child examination. His mother reports that she had previously breastfed her son every 2 hours for 15 minutes but is now feeding him every 4 hours for 40 minutes. She says that the infant sweats a lot and is uncomfortable during feeds. He has 6 wet diapers and 2 stools daily. He was born at 36 weeks gestation. He currently weighs 3500 g 7.7 lb and is 52 cm 20.4 in in length. He is awake and alert. His temperature is 37.1C 98.8F, pulse is 170min, respirations are 55min, and blood pressure is 8060 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 99. Cardiopulmonary examination shows a 46 continuous murmur along the upper left sternal border. After confirming the diagnosis via echocardiography, which of the following is the most appropriate next step in the management of this patient?? A: Prostaglandin E1 infusion, B: Percutaneous surgery, C: Digoxin and furosemide, D: Indomethacin infusion, E: X-ray of the chest,  <response>: This is a question about managing an infant with a heart murmur. Based on the description, the infant likely has patent ductus arteriosus PDA, which is a condition where the ductus arteriosus fails to close after birth, resulting in a continuous murmur. The key findings pointing to PDA are:- Age 1 month - History of prematurity at 36 weeks gestation- Continuous murmur along left upper sternal border- Confirmed by echocardiogramThe next step in management would be to close the PDA, usually done medically first. Prostaglandin E1 helps keep the ductus arteriosus open in utero but would not be used to close a PDA after birth. Percutaneous closure could be an option but medical management is preferred as first-line. Digoxin and furosemide treat heart failure but would not address the underlying PDA. Indomethacin infusion can help close a PDA by promoting ductal constriction and is the most appropriate next step. A chest x-ray would not directly treat the PDA.D: Indomethacin infusion 