What is the output of the following code?
function append($str)
{
$str = $str.’append’;
function prepend(&$str)
{
$str = ‘prepend’.$str;
$string= ‘zce’;
append(prepend($string));
echo $string;
A . zceappend
B . prependzceappend
C . prependzce
D . zce
Answer: C