<prompt> Not associated with twin pregnancy: March 2009Pre-eclampsiaOligohydramniosAntepaum hemorrhageAtonic uterus  <response>: Ans. B: Oligohydramnios Maternal complications of multiple pregnancy: Anemia Pre-eclampsia 25 Polyhydramnios 10 Malpresentations Preterm labour 50 Early rupture of membranes Prolonged labour Postpaum hemorrhage due to uterine atony Sub-involution of uterus Antepaum hemorrhage 