What will be the output of the following PHP code ? <?php $x = 4; $y = 3; function fun($x = 3, $y = 4) { $z = $x+$y/$y+$x; echo "$z"; } echo $x; echo $y; echo $z; fun($x, $y); ?>

• A. 43
• B. 943
• C. 349
• D. 439