Hello aspirant,

Hope you are doing absolutely great.

SO with regard to your query, YES you can take BCA course after completion of Arts branch in 12th standard. However you should keep in mind two points:

1. You need to complete your 12th with 50% of aggregate marks from any recognized board.

2. You will not be able to take MCA after completion of BCA, because to pursue MCA one need to have Mathematics subject in their 12th standard.

Hope this helps you!!