This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Which of the following is also known as self healing carcinoma: 
Select and explain. 
A. Kerato acanthoma., B. Basal cell carcinoma, C. Leukoplakia, D. Squamous cell carcinoma
A: Kerato acanthoma.
Answer: A: Kerato acanthoma. 
Explanation: None