What will be the output of the following PHP code? <?php $arr = array ("picture1.JPG", "picture2.jpg", "Picture10.jpg", "picture20.jpg"); sort($arr); print_r($arr); ?>

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Question:What will be the output of the following PHP code? <?php $arr = array ("picture1.JPG", "picture2.jpg", "Picture10.jpg", "picture20.jpg"); sort($arr); print_r($arr); ?>

1.Array ( [0] => picture1.JPG [1] => Picture10.jpg [2] => picture2.jpg [3] => picture20.jpg )

2. Array ( [0] => picture1.JPG [1] => picture2.jpg [2] => Picture10.jpg [3] => picture20.jpg )

3.Array ( [0] => Picture10.jpg [1] => picture1.JPG [2] => picture2.jpg [3] => picture20.jpg )

4.Array ( [0] => Picture10.jpg [1] => picture1.JPG [2] => picture20.jpg [3] => picture2.jpg )

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  1. What will be the output of the following PHP code? <?php $arr = array ("picture1.JPG", "picture2.jpg", "Picture10.jpg", "picture20.jpg"); sort($arr); print_r($arr); ?>
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