**Core Concept**
A rodent ulcer is a type of skin cancer, specifically a basal cell carcinoma, which is the most common form of skin cancer. It is characterized by slow growth and local destruction of tissue, but rarely metastasizes.

**Why the Correct Answer is Right**
Rodent ulcers are typically seen in fair-skinned individuals with a history of prolonged exposure to ultraviolet radiation, which causes damage to the DNA of skin cells. This leads to uncontrolled proliferation of basal cells, resulting in a tumor. The tumor grows slowly and locally, often with a characteristic "pearly" appearance.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because rodent ulcers are not typically associated with viral infections, unlike other types of skin cancers such as squamous cell carcinoma.
**Option B:** This option is incorrect because while seborrheic keratoses can be found on the face, they are benign growths and do not represent a malignant process like rodent ulcers.
**Option C:** This option is incorrect because while actinic keratoses are precancerous lesions that can develop into squamous cell carcinoma, they do not have the characteristic features of rodent ulcers.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that basal cell carcinoma, including rodent ulcers, can be treated effectively with surgical excision, radiation therapy, or topical chemotherapy, and early detection is crucial for preventing local destruction of tissue.

**Correct Answer: C. Basal cell carcinoma**