In BA you have 96 credits in total. From which:
24 credits are of 3 compulsory courses of 8 credits each.
64 or 56 credits are of the courses of your choice.
8 or 16 credits are of application oriented courses.
You are allowed to complete only 32 credits every year. If you want minimum courses for your BA program you should choose all courses of 8 credits each. That will be 12 courses for 3 years, 4 courses per year.
But if you want your BA degree to be a BA major, then you must complete 48 credits in one specific subject (subject in which you want a BA major).
2 more important things to know are:
The theory exams of the 4 credit courses are of 50 marks in 2 hrs.
The theory exams of the 8 credit courses are of 100 marks in 3 hrs.
Note that these 48 credits must be completed in 3 years with minimum 16 credits per year in that specific subject.