This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Twin Pregnancy, Molar Pregnancy, Gestational Trophoblastic disease and contraception in special situations (Sour Grapes!), Subject name: Gynaecology & Obstetrics
[{'content': 'Out of all the following statements regarding twins pregnancy, which one is false? \nSelect and explain. \nA. The frequencies of monozygotic twins is 1 in 250 Pregnancies, B. Division after formation of the embryonic disk results in conjoined twins, C. Most common type of Dizygotic twins are through superfetation, D. A dichorionic twin pregnancy can also denote monozygotic twins.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Option A,B,D are correct Superfecundation it is the feilization of two or more ova from the same cycle by 2 different sperms(1 cycle & 2 eggs) Most common type of Dizygotic twins are through Superfecundation Superfetation : Very rare in humans. This is mostly a phenomenon seen in cattle. Here 2 eggs of 2 separate cycles are feilised with 2 separate acts of intercourse.', 'role': 'assistant'}]