What do the initially empty stacks stack$1$ and queue$1""$look like"" after the following sequence of operations? stack$1.$push$("$an$")$stack $1.$push$("$a$")$queuel enqueue$("$apple$")$queue l$.$enqueue$("$day$")$stack$1.$pop$()$stack$1.$push$($queue$1.$peekFron$()$queue $1.$dequeue$)$:queue $1.$enqueue$("$a$")$;str$=$queue $1.$peekFron$()$;queuel.dequeue$)$; stack$1.$push$($str$)$stack$1.$push$($queue$1.$peekFron$())$queue $1.$dequeue$)$;