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
In threatened aboion, the size of uterus: 
Select and explain. 
A. Smaller than expected, B. Larger than expected, C. Corresponds to duration of amenorrhea, D. None of the above
C: Corresponds to duration of amenorrhea
Answer: C: Corresponds to duration of amenorrhea 
Explanation: c;Corresponds to duration of amenorrhea