You are called to the operating room. The general surgeons have operated on a woman to rule out appendicitis and the signs of an abdominal pregnancy with an 18 week fetus and placenta attached to the omentum. The best course of action in the case is :
Removal of the fetus only
Removal of both fetus and placenta
Laparoscopic ligation of umbilical cord
Removal of the fetus only
Closely follow until bility and then deliver by laparotomy