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
Mucinous cystadenoma of the ovary arises - 
Select and explain. 
A. From cystic teratoma, B. From surface coelomic epithelium, C. From sex cord stromal cells, D. From ectopic mucin secreting glands
B: From surface coelomic epithelium
Answer: B: From surface coelomic epithelium 
Explanation: None