What will be the output of the following PHP code?<?php$subject

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What will be the output of the following PHP code?

<?php
$subject = array('a' => 'Math',  'b' => 'Science', 'c'=> 'Geography');
asort($subject);
foreach ($subject as $key => $val)
{
echo "$key = $val";
echo "\n";
}
?>

1. Error
2. c = Geography
  a = Math
  b = Science
3. Nothing
4. a = Math
  b = Science
  c = Geography
5. None of these

Correct Option: B

The function asort() sorts the array in ascending order, except that the key/value corresponding is maintained.