Javier and Marie have a one year old daughter, Mia. Marie approaches Javier about wanting to ...

Javier and Marie have a one year old daughter, Mia. Marie approaches Javier about wanting to conceive a second child. Javier looks at Marie in disbelief, reminding her that during the birth of Mia,
 
  Marie swore she would never go through the agony of childbirth again. Marie claims that Javier is exaggerating, but admits that she can not quite remember all of the details of the birth; However, she is more than ready to go through childbirth again. What likely contributed to Marie's vague recollection of the birth of her first child?
 
  a. the general anesthesia that Marie was under, while pushing Mia through the birth canal
  b. the face-and-forget phenomenon, whereby when a mother first sees the face of her newborn child, she immediately forgets the experience of childbirth
  c. post traumatic birth disorder, which is associated with nearly 50 of all births
  d. a rise in Marie's oxytocin levels during the childbirth