Dear Student,

It depends on which board you are reading. But nowadays the rules of that condition is, in which subjects you will get marks the best ones, that will be your counted and best subjects. And the other one will be your additional subject.

Thank you.

Hello there,
For calculating best of four, you should consider your main subjects. You need to include English, along with 3 other subjects, in which you scored the highest marks. Hence, yes, you can use the subjects mentioned by you to calculate your best of four.
Hope this answer helps you.
Good luck!!