How Do Male Infants React When They Are Circumcised Without

How do male infants react when they are circumcised without anaesthesia?

A) They emit high-pitched wails during the surgery and show an increase in plasma cortisol afterward.
B) They show little response to the surgery as long as they can hear the sound of their mother's voice during the procedure.
C) They emit high-pitched wails during the surgery and show a decrease in plasma cortisol afterward.
D) They show small changes in heart rate, but otherwise little measurable reaction.