What will be the output of the following PHP code?<?phpdefine("GREETING1","Welcome

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What will be the output of the following PHP code?

<?php
define("GREETING1","Welcome to interview mania!");
define("GREETING2","Welcome to interview mania!");
define("GREETING3","Welcome to interview mania!");
echo defined("GREETING");
?>

1. "GREETING Welcome to interview mania! " 3 times
2. Error
3. "Welcome to interview mania!" 3 times
4. Nothing
5. None of these

Correct Option: D

The defined() function checks whether a constant exists.