A pregnant woman with a history of previous caesarean section is diagnosed antenatally with abnormal placental attachment. Imaging shows placental villi firmly attached to the uterine wall without invasion into the myometrium. Which condition best explains this finding?

During antenatal examination, the umbilical cord length is measured to be more than 100 cm. Which complication is most likely associated with this finding?

A laboring woman develops a sudden intrapartum hemorrhage associated with premature rupture of membranes and uterine inversion. Which umbilical cord abnormality most likely contributed to this complication?