Hi Aspirant,
It totally depends on your interest.
If you are good at calculations and want your choice to stay at the top of the priority list of most of the students,then b.Com in accounts and mba in finance proves to be really handy.
Also,since you are from the commerce field,having any specialisation background probably doesn't matter much if you do a mba with comprehends it.
For eg-mba in finance,marketting,Banking and financial services etc.
Hope this helps.