<?php
$a = 10;
$b = 20;
$c = 30;
if ($a < 50 && $b > 100 || $c == 30) {
echo "a";
}
else {
echo "b";
}
if ($b < 50 XOR $c == 30) {
echo "c";
}
else {
echo "d";
}
?>
Enter the exact script output