<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 54-year-old woman is diagnosed with locally-advanced invasive ductal adenocarcinoma of the breast. She undergoes surgical resection, radiation therapy, and is now being started on adjunctive chemotherapy with cyclophosphamide and doxorubicin. The patient is scheduled for follow up by her primary care provider. Which of the following tests should be performed regularly to monitor her current treatment regimen?? A: Cardiac MRI, B: Chest radiograph, C: ECG, D: Echocardiography, E: No regular monitoring indicated,  <response>: This is a question about monitoring a patient who is receiving cyclophosphamide and doxorubicin chemotherapy for breast cancer. Cyclophosphamide and doxorubicin are anthracycline chemotherapies that can cause cardiotoxicity. Therefore, the correct answer should be a test that monitors cardiac function. MRI can evaluate cardiac function but is not typically used for routine monitoring. Chest x-ray does not evaluate cardiac function. ECG can detect arrhythmias but does not fully evaluate cardiac function. Echocardiography allows assessment of cardiac function through evaluation of ejection fraction and wall motion abnormalities. It is the best choice for regular monitoring in this patient receiving potentially cardiotoxic chemotherapy.D: Echocardiography 