B.A

Yes, you can do M.A. In Psychology after graduation in any field. The course is eligible for the students who have completed graduation in any discipline with a minimum of 50% marks from a recognised university. It may vary for different universities. But there are many Universities that allow you to pursue a master's in psychology without a Bachelor's specifically in the field. Here are some of the good universities you can refer to pursue Psychology course:
Amity University
G D Goenka University
IILM University, Gurugram
Ambedkar University.

Hi. Yes you can get admission in DCAC or in any college. But all depends upon your marks and cut off of the college.