<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An 18-year-old man presents to his primary care provider before leaving for college. He has no complaints. His past medical history is significant for asthma, acne vulgaris, and infectious mononucleosis at age 16. His home medications include doxycycline and albuterol as needed. His family history is significant for colon cancer in his father at age 50, his paternal grandfather at age 55, and an uncle at age 45. His father underwent testing for mutations in the APC gene, which were negative. There is no family history of dental abnormalities or other malignancy. The patient denies any recent weight loss, abdominal pain, hematochezia, melena, or other changes in the appearance of his stools. This patient should be screened for colorectal cancer CRC under which of the following protocols?? A: Colonoscopy every 1-2 years beginning at age 25, B: Colonoscopy every 5 years beginning at age 40, C: Colonoscopy every 10 years beginning at age 40, D: Colonoscopy every 10 years beginning at age 50, E: Prophylactic colectomy,  <response>: This 18-year-old male patient has a strong family history of early-onset colorectal cancer in multiple first-degree relatives, which puts him at high risk for developing colorectal cancer himself. The family history is suggestive of hereditary nonpolyposis colorectal cancer HNPCC, also known as Lynch syndrome, although genetic testing in his father was negative. For patients with suspected HNPCC, screening colonoscopies are recommended to begin at age 20-25 years or 10 years before the earliest colorectal cancer diagnosis in the family if it is before age 25. Therefore, the correct answer is A - colonoscopy every 1-2 years beginning at age 25.A: Colonoscopy every 1-2 years beginning at age 25 