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: Gynaecology & Obstetrics
Characteristic features of Rokitansky - Kuster Hauser syndrome are all of the following except: 
Select and explain. 
A. Absent uterus, B. Absent vagina, C. Anovulation, D. 46 - XX
C: Anovulation
Answer: C: Anovulation 
Explanation: None