What will be the output of the following PHP code? <?php $a1 = array_fill(1, 4, "hello"); $b1 = array_fill(5, 1, "php"); $a2 = array_merge($a1, $a2); print_r($a2); echo ""; print_r($b1); ?>

Array ( [1] => hello [2] => hello [3] => hello [4] => hello )

Array ( [1] => hello [4] => hello [5] => php )

Array ( [1] => hello [2] => hello [3] => hello [4] => hello [5] => php )

What will be the output of the following PHP code? <?php $a1 = array

1.	What will be the output of the following PHP code? <?php $a1 = array_fill(1, 4, "hello"); $b1 = array_fill(5, 1, "php"); $a2 = array_merge($a1, $a2); print_r($a2); echo ""; print_r($b1); ?>
A.	Array ( [1] => hello [4] => hello [5] => php )
B.	Array ( [1] => hello [2] => hello [3] => hello [4] => hello )
C.	Array ( [1] => hello [2] => hello [3] => hello [4] => hello [5] => php )
D.	Array ( [1] => hello [2] => hello [3] => hello [4] => hello )
Answer» D. Array ( [1] => hello [2] => hello [3] => hello [4] => hello )