<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:One day after doctors helped a 28-year-old primigravid woman deliver a 4,700 g 10 lb 6 oz boy, the newborn has bluish discoloration of the lips and fingernails. His temperature is 37.3C 99.1F, the pulse is 166min, the respirations are 63min, and the blood pressure is 6844 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 81. Examination shows central cyanosis. A grade 26 holosystolic murmur is heard over the left lower sternal border. A single second heart sound is present. Supplemental oxygen does not improve cyanosis. An X-ray of the chest shows an enlarged cardiac silhouette with a narrowed mediastinum. Which of the following cardiac defects would be associated with this newborns diagnosis?? A: Alignment of infundibular septum, B: Division of aorta and pulmonary artery, C: Fusion of endocardial cushion, D: Separation of tricuspid valve tissue from myocardium, E: Ventricular septal defect,  <response>: This is a question about identifying the cardiac defect in a newborn based on the clinical presentation. The key findings in the stem are central cyanosis, a holosystolic murmur, single second heart sound, and enlarged cardiac silhouette on X-ray. Choice A Alignment of infundibular septum describes tetralogy of Fallot, which can present with cyanosis but usually has a systolic ejection murmur. Choice B Division of aorta and pulmonary artery describes transposition of great arteries. This defect would not cause a murmur or cardiomegaly.Choice C Fusion of endocardial cushion describes endocardial cushion defects such as atrioventricular septal defects. These would have a diastolic murmur. Choice D Separation of tricuspid valve tissue from myocardium describes Ebstein anomaly. This can have cyanosis but would have a holosystolic murmur at the left sternal border. Choice E Ventricular septal defect is the most likely given the findings of cyanosis, holosystolic murmur at the left lower sternal border, single S2, and cardiomegaly. The murmur is from increased flow across the VSD. E: Ventricular septal defect 