What will be the output of the following PHP code ? <?php $a = 10; $b = 4; $c = fun(10,4); function fun($a,$b) { $b = 3; return $a - $b + $b - $a; } echo $a; echo $b; echo $c; ?>

• A. 104
• B. 410
• C. 1400
• D. 4100