Hello,

You said you are in final year and there is no semester wise examination in IGNOU.

Now tell me how many exams you were writing in a year?

If writing 2 of the in a year,then in apllication write 5th SEM if you haven't attempted any one the exam.

If there's only 1 exam in a year then write 6th SEM in the application.

Now check the application twice is there any optional choice of examination type.

If you are applying application in internet shops ask him he will even provide you the information.

Hope this helped you out.Thank you