Dear I Know,
If you are good at fine arts you can choose it as your major subject. You are free to choose any subject as per your choice. Well if you already have it as your optional one you will be not able to do so. You need to wait for the current academic session to be over. Care should be taken while choosing the subjects. Securing good marks will not let you to do so unless you have chosen it as your major subject.

Hello there,

You can include fine arts in your best of four, if you have scored higher in comparison to other subjects but since it is your 6th subject, there will be a deduction of 2.5-5% while calculating your aggregate percentage keep this in mind before including fine arts.

Best of luck!