<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 2-week-old newborn is brought to the physician because of worsening feeding difficulty since birth. Examination shows a grade 26 harsh holosystolic murmur, heard most clearly at the left lower sternal border, and a soft mid-diastolic rumble over the cardiac apex. Echocardiography shows shunting of blood through the ventricular septum during systole. The patient undergoes surgery for closure of the defect. Which of the following sets of changes are expected after successful repair of this cardiac defect? Left atrial pressure Left ventricular pressure Right ventricular pressure ? A: no change, B: , C: , D: , E: ,  <response>: This is a question about changes in cardiac chamber pressures after surgical repair of a ventricular septal defect VSD in an infant. The key findings in the stem are a harsh systolic murmur at the left lower sternal border, mid-diastolic rumble at the apex, and echocardiographic evidence of a VSD with left-to-right shunting. A VSD causes left-to-right shunting, resulting in increased pulmonary blood flow and pulmonary pressures. This leads to right ventricular volume and pressure overload. The left ventricle LV also has increased volume due to the shunting. After surgical closure of the VSD, the left-to-right shunt is eliminated. Therefore, left atrial pressure should decrease as LV volume decreases. LV pressure should also decrease with elimination of the volume overload. Right ventricular pressure should normalize without the pressure overload from high pulmonary pressures.B: 