it depends on you.
you have studied computer application and i think now you are well worsed with application part of computer to the current industry.now you have to decide to which field you want to make your career.i think its better to mca rather then mba(it).
MCA.
MCA is better
The best masters degree for a BCA student is either an MCA or an MBA.
u can mca or mba
After completing your Bachelor of Computer Applications (BCA), you have several options for further education and career paths. You can MCA or MBA
yes definitely it is possible to do MBA after BCA. that depends on your interest. [iimtindia.net]
it is best to do mca after bca bcoz it is a source of good income
MCA
bcoz there is more income than mca nd my personal interest
all is good here
MBA (systems) is good considering job opportunities. You will have more exposure to industry-specific requirements in any domain.
After BCA you can do MCA if you want to be an engineer or else you can go for MBA degree if you want to make career in Management field.