John asks his mother to extend his curfew from 11:00 pm to 3:00 am so he can attend a party in a near-by town with friends. His mother refuses, so John asks if she will extend the curfew until 2:00 am. She again refuses and John continues to negotiate until they decide his curfew will be 1:30 am. This is an example of _______________.a.foot-the-door persuasionb.door-in-the-foot persuasionc.face-in-the-door persuasiond.door-in-the-face persuasion