An HTML form has two submit buttons. After submitting the form, how can you determine with PHP which button was clicked?
A . An HTML form may only have one button.
B . You cannot determine this with PHP only. You must use JavaScript to add a value to the URL depending on which button has been clicked.
C . Put the two buttons in different forms, but make sure they have the same name.
D . Assign name and value attributes to each button and use $_GET or $_POST to find out which button has been clicked.
Answer: D