Both MBA and CA are very good.It depends on your choice and type of job you want to do.
CA generally deal with audit work,finance work ,taxation,etc.It is almost of 5 years.

Whereas MBA course is based on management skills and they do work as manager.It takes 2years after graduation.

So,it depends on your choice as both have wide scope.

Both CA and MBA are a fascinating field and have a lot of career opportunities to grow yourself in every way. It entirely depends on your interest that which field you choose and what actually you want to make as your career.

If you are interested totally in finance then you can look forward to pursuing CA but if you want to do management and enter into the corporate world then you can change your goals for MBA. Doing MBA has an advantage that it opens up a lot of scope for you. Not only you can do financial management but there are many other streams such as marketing, operations, HR, Analytics etc. where according to your interest you can pursue your management degree.

So in short, both the fields are good, lots of job and money in future but I strongly advise to take a decision on the basis of your interest so that you can give your best in it.