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

def dictionary$\_$operations $($self $,$ kev ${?}_l$ value$)$:

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

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

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

return self.sanple$\_$dict

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

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

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

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

return self. sample$\_$dict