This tumor commonly results from mutations in p53. Which of the following is correct?

A. It is the most common type of skin cancer in Caucasians

B. Oral variants most commonly present on the dorsal tongue

C. It is typically less aggressive in patients with CLL

D. plant patients have a 10-fold increased risk of developing this tumor

E. Tumors arising within scars/chronic ulcers have the highest risk of metastasis

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