A 60-year-old woman presented to an oral surgery clinic with gum swelling. She had associated bleeding while brushing her teeth. She had a history of colorectal cancer treated with surgery and chemotherapy. On examination, a large, nontender, pedunculated mass was noted. What is the diagnosis?

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A. Zimmerman-Laband syndrome

B. Metastasis of colorectal cancer

C. Gingival hyperplasia secondary to chemotherapy

D. Alveolar soft part sarcoma

E. Irritation fibroma