Hello aspirant,
There are a lot of jobs and job opportunities for a science students. Specially a pcm Student. Since you have mentioned these two of them then both of them are equally very good as a job and both would be very great.
Ba with Psc exam would be a better choice as it would be give you an extent of exploring and would help you learn a lot.
B bharna would also be a good choice of you were a bio student but not as a maths stream student.