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 stomal cells, D. From ectopic mucin secreting glands
B: From surface coelomic epithelium
Answer: B: From surface coelomic epithelium 
Explanation: Ans. is 'b' i.e., From surface coelomic epithelium