A 64-year-old man presents with progressive fatigue and microcytic anemia. Colonoscopy reveals a 3-cm ulcerated mass in the ascending colon. CT scan shows no distant metastases. What is the most appropriate next step in management?AEndoscopic mucosal resection onlyBRight hemicolectomy with lymph node dissectionCNeoadjuvant chemoradiation followed by local excisionDObservation with repeat colonoscopy in 6 monthsEPalliative chemotherapy onlyCheck my answer