Consider the Positive Feedback That Regulates Mammalian Childbirth

Consider the positive feedback that regulates mammalian childbirth. In this process, the pituitary gland is _____, oxytocin is _____, and a uterine contraction is _____.

A) the effector; the stimulus; the response
B) the sensor; the effector; both the stimulus and response
C) both the stimulus and response; the effector; the sensor
D) both the stimulus and response; the sensor; the effector