What is the output when the following sequence of operations is performed on an empty stack $s?$ Enter your answer as a comma$-$

and space separated list, e$.$g$.$ A$,$ A$,$ A$,$ A$,$ A if you think the answer is $5$ As in a row.

$>>s.$push$(\text{'}A\text{'})$

$>>s.$push$(B^{\text{'}}\text{'})$

$>>s.$push$(\text{'}C\text{'})$

$>>s.$ peek $()$

$>>>s.$pop$()$

$>>s.$push$(\text{'}D\text{'})$

$>>s.$pop$()$

$>>s.$pop$()$

$>>s.$ peek $()$

$>>>s.$pop$()$