Bobby's Parents Used Extinction to Get Him to Stop Crying

Multiple Choice

Bobby's parents used extinction to get him to stop crying when he had to eat vegetables,by making him eat vegetables despite his crying.One night Bobby has a babysitter,and she does not make him eat his vegetables when he starts crying.As a result,Bobby's behavior of crying when told to eat vegetables:​

A) ​has not been reinforced
B) ​has been intermittently reinforced
C) ​has been continuously reinforced
D) ​A and B