What will be the output of the following PHP code ?<?phpecho $Yellow;?

1.	What will be the output of the following PHP code ? <?php echo $Yellow; ?>
A.	Nothing
B.	True
C.	False
D.	0
E.	Error
Answer» F.

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What will be the output of the following PHP code ?<?phpecho $Yellow;?>

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What will be the output of the following PHP code ?
<?php
echo $Yellow;
?>