What is the output of the following program lines when they are embedded in a correct program?

char option $={?}^{\text{'}}A\text{'}$;

switch $($option$)$

$\{$

case $\text{'}$A$\text{'}$:

cout $\text{'}\text{'}$A$\text{'}$;

case $\text{'}B\text{'}$:

cout B$\text{'}$;

break;

case $\text{'}C\text{'}$:

cout $<mtext\; id="EditorElement\_9923365"></mtext><mi\; id="EditorElement\_9923366">\text{'}</mi>$C$\text{'}$;

break;

default:

cout $$ "Done!";

$\}$