This answer is true according to adding a new key$-$value pair to the dictionary?

def dictionary$\_$operations$($self$,$ key, value$)$:

self. sample$\_$dict$[$value$]=$ key

return self.sample$\_$dict

def dictionary$\_$operations$($self$,$ key, value$)$:

return self,sample$\_$dict.update$($value$,$ key$)$

def dictionary$\_$operations$($self$,$ key, value$)$:

self.sample$\_$dict$[$key$]=$ value

return self, sample$\_$dict

def dictionary$\_$operations$($self$,$ key, value$)$:

return self.sample$\_$dict.update$($key$,$ value$)$