If your 12th certificate over all result says "Passed" then it should not be a problem. This is because you have completed your 12th and are also pursuing your BA based on that. Then the additional subject results do not count. For appearing for CAT, you should have completed your Graduation in any stream. You can only pursue your Graduation if you complete and pass your 12th. So all that matters is your 12th certificate should show as "Passed".