A 70-year-old man presents with fatigue, weight loss, abdominal pain, and overt blood in the stools. A complete blood count reveals anemia with hemoglobin of 10.0 g/dL. A colonoscopy and colon biopsy reveal adenocarcinoma. Which of the following is the most likely predisposing lesion that led to this condition? (a) FAP syndrome (B) Hyperplastic polyp (C) Long-standing ulcerative colitis (D) Peutz-Jeghers polyp (e) Tubular adenoma