John Was Dismissed by His Organization After He Was Caught

John was dismissed by his organization after he was caught on live TV cameras making racist and sexist comments after a soccer game. If he challenges his dismissal in courts, what would the employer have to prove, among other things, to successfully argue its case?

A) that John usually does the same at work
B) that John caused damage to the reputation of the organization
C) that John is not a good employee
D) that John was not given permission to attend the game