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
A specimen of the ovarian mass is showing a lesion which contains hair, dermal appendages, bone and teeth. Which of the following statement is not true? 
Select and explain. 
A. It is Rokitansky protuberance, B. It is a common site for malignant transformation, C. It is seen in embryonal carcinoma, D. Squamous cell carcinoma is the most common type of malginant transformation
C: It is seen in embryonal carcinoma
Answer: C: It is seen in embryonal carcinoma 
Explanation: Rokitansky protuberance is a hallmark finding in gross specimen of Benign cystic teratoma. (Mature Teratoma)