Given the following sequence of stack operations, what is the top item on the stack when the sequence

is complete? For each line, write down the output and the stack contents after executing the command.

m$=$Stack$()$

m$.$push$($x$)$

m$.$push$($y$)$

m$.$pop$()$

m$.$pop$()$

m$.$isEmpty$()$

m$.$pop$()$

m$.$push$($z$)$

m$.$push$($y$)$

m$.$isEmpty$()$

Hi$.$push$($t$)$

m$.$size$()$