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
The uncommon change to occur in a myoma is : 
Select and explain. 
A. Calcification, B. Red degeneration, C. Malignant change, D. Hyaline change
C: Malignant change
Answer: C: Malignant change 
Explanation: Malignant change