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
Spasmodic dysmenorrhoea isseen in : 
Select and explain. 
A. DUB, B. Ovarian cyst, C. Submucus fibroid, D. Endometriosis
C: Submucus fibroid
Answer: C: Submucus fibroid 
Explanation: Submucus fibroid