A 55-year-old man with no symptoms attends for a periodic health examination. He has no family history of colorectal cancer. According to the Canadian Task Force on Preventive Health Care, which screening strategy is most appropriate?AFlexible sigmoidoscopy every 5 years from age 40 to 74BFaecal immunochemical test every 2 years from age 50 to 74CAnnual colonoscopy from age 50 to 74DNo screening is recommended because he is asymptomaticESingle sigmoidoscopy at age 75 onlyCheck my answer