Which of the Following Is an Example of Positive Feedback

Multiple Choice

Which of the following is an example of positive feedback during labor?

A) the movement of the fetus toward the cervical canal
B) the pressure the unborn exerts on the cervix
C) the distortion of the myometrium stimulates oxytocin release
D) the dilation of the cervix followed by the rupture of the amnion
E) the ejection of the placenta at the end of the placental stage