$[$CSE$205$ Q$1]$ Trace a stack $($called S$)$ through the following operations:

Stack S $=$ new Stack$()$;

S$.$push$($new Integer$(3))$;

Integer X $=$ S$.$pop$()$;

S$.$push$($new Integer$(7))$;

S$.$push$($new Integer$(5))$;

Integer Y $=$ S$.$peek$()$;

S$.$push$($new Integer$(9))$;

Integer Z $=$ S$.$pop$()$;

Give the contents of the stack after this code has been executed. Fill your answers starting from the top and working down to the bottom. If a blank is not necessary, choose NA$.$ Blank spaces should be on the top side.