How to access options.php on form submit when the user role is contributor?

I creating one wordpress plugin where I want to update options.

I used below code

<form method="post" action="options.php">

But When I submit this form I got error

 Cheatin’ uh?

Here I have logged in as contributor.So How to submit this form when user is contributor? I want to access only this file when user is contributor.

via Chebli Mohamed