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
Most common type of twin pregnancy is: March 2012 
Select and explain. 
A. Conjoined twins, B. Monoamniotic monochorionic twins, C. Diamniotic monochorionic twins, D. Diamniotic dichorionic twin
C: Diamniotic monochorionic twins
Answer: C: Diamniotic monochorionic twins 
Explanation: Ans: C i.e. Diamniotic monochorionic twins Frequency of twins Frequency of conjoined twins ( Frequency of M/M is 3% Frequency of D/M is 66% Frequency of D/D is 30% MC cause of moality in twins is: Prematurity.