<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 62-year-old man presents to his primary care provider complaining of leg pain with exertion for the past 6 months. He notices that he has bilateral calf cramping with walking. He states that it is worse in his right calf than in his left, and it goes away when he stops walking. He has also noticed that his symptoms are progressing and that this pain is occurring sooner than before. His medical history is remarkable for type 2 diabetes mellitus and 30-pack-year smoking history. His ankle-brachial index ABI is found to be 0.80. Which of the following can be used as initial therapy for this patients condition?? A: Endovascular revascularization, B: Duloxetine, C: Heparin, D: Cilostazol, E: Arthroscopic resection,  <response>: This is a patient with symptoms of intermittent claudication, likely due to peripheral arterial disease. The history of diabetes, smoking, and abnormal ABI are consistent with this diagnosis. Initial therapy for claudication includes exercise, smoking cessation, and medications to improve symptoms. Endovascular revascularization is considered for severe, lifestyle-limiting claudication that is refractory to medical therapy. Heparin and arthroscopic resection would not be appropriate initial treatments. Based on the description, the best initial therapy would be a medication like cilostazol to improve symptoms.D: Cilostazol 