This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Multiple Pregnancy, Subject name: Gynaecology & Obstetrics
What is the most common type of twin pregnancy? 
Select and explain. 
A. Dichorionic diamniotic, B. Monochorionic diamniotic, C. Monochorionic monoamniotic, D. Dichorionic monoamniotic
A: Dichorionic diamniotic
Answer: A: Dichorionic diamniotic 
Explanation: Ans. A. Dichorionic diamniotica. Dizygotic twins are more common than monozygotic twins. Thus, dichorionic diamniotic is the most common variety.b. The most common variety of monozygotic twins is monochorionic diamniotic.