Which code option will produce an alert that says $$Learning PHP creates Pretty Happy People using PHP$!?$

a$.)$

$"$;

echo $"$ var message $=\text{'}".$ $message $."\text{'}$;$"$;

echo $"$ alert$($message$)$;$"$;

echo $""$;

$?>$

b$.)$

$"$;

echo $"$ var message $=\text{'}".$ $message $."\text{'}$;$"$;

echo $""$;

$?>$

c$.)$

$"$;

echo $"$ var message $=\text{'}"$ $message $"\text{'}$;$"$;

echo $"$ alert$($message$)$;$"$;

echo $""$;

$?>$

d$.)$

$"$;

echo $"$ var message $=\text{'}".$ message $."\text{'}$;$"$;

echo $"$ alert$($message$)$;$"$;

echo $""$;

$?>$