<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 50-year-old Caucasian man presents for a routine checkup. He does not have any current complaint. He is healthy and takes no medications. He has smoked 1015 cigarettes per day for the past 10 years. His family history is negative for gastrointestinal disorders. Which of the following screening tests is recommended for this patient according to the United States Preventive Services Task Force USPSTF?? A: Prostate-specific antigen for prostate cancer, B: Carcinoembryonic antigen for colorectal cancer , C: Abdominal ultrasonography for abdominal aortic aneurysm, D: Low-dose computerized tomography for lung cancer, E: Colonoscopy for colorectal cancer,  <response>: This is a question asking about the appropriate cancer screening test recommendation for a 50-year-old Caucasian man with a 10 pack-year smoking history who presents for a routine checkup. The key details are the patients age, race, lack of symptoms, and smoking history. I need to consider the USPSTF guidelines for cancer screening in average-risk individuals.E: Colonoscopy for colorectal cancer 