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: Surgery
All the following are congenital cysts except 
Select and explain. 
A. External angular dermoid cyst, B. Sebaceous cyst, C. Branchial cyst, D. Thyroglossal cyst
B: Sebaceous cyst
Answer: B: Sebaceous cyst 
Explanation: None