Carcinoma of the lip is characterized by the following except that -: (A) 90% of the lip cancers occur on the lower lip, (B) The most common site of origin is the vermillion border, (C) 2 cm X 2 cm cell carcinomas can be treated by V shaped excision and primary closure, (D) Since lymph noded metastases are common after a radical dissection of neck is mandatory
Answer is D. Lymph node metastases in lip cancer is not common. Seen in less than 10% cases.

Most common site of lip cancer is lower lip (88 to 98%) > upper lip (2 to 7%) > oral commissure (1%).
Most common cancer is squamous cell carcinoma.
Most common cancer for upper lip is Basal cell carcinoma.