<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 3-month-old boy is brought to the physician for a routine follow-up examination. He was delivered at 32 weeks gestation to a 35-year-old woman. Cardiac examination is shown. Which of the following is the most likely cause for this patients findings?? A: Patent ductus arteriosus, B: Ventricular septal defect, C: Atrial septal defect, D: Mitral valve prolapse, E: Tetralogy of Fallot,  <response>: This is a 3-month-old premature infant being seen for routine follow-up. The key finding in the question is the cardiac murmur on examination. The differential for a cardiac murmur in an infant includes structural defects like ventricular septal defect, atrial septal defect, patent ductus arteriosus, and tetralogy of Fallot. However, patent ductus arteriosus is most common in premature infants as the ductus often fails to close after birth in preemies. A: Patent ductus arteriosus 