This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Radiology
Maximum radiopaque shadow in ovary is seen in 
Select and explain. 
A. Teratoma, B. Dysgerminoma, C. Mucinous cyst adenoma, D. Granulose cell tumour
A: Teratoma
Answer: A: Teratoma 
Explanation: Teratoma is most radio-opaque because of its calcifications (Ref: Radiology Review Manual by Wolfgang Dahne 6thEtd, 1010)