Should I study Accounting/AIS or MIS?

I just transferred to a 4 year university, and I applied for MIS. The fall quarter will start soon, and I still dont know if I live MIS or not. I like Accounting too. I'm planning to get a master degree. My dream is to start my own business so which major is better for me?

The Cons pp told me about MIS: as I get older I will not able to update my skills like the young students, and I will get laid off and will be hard to find a different job because company like young smart students and salary is also low because they have no experience.

I'm so indecisive, I need to figure this out now before too late. Any advice would be really appreciated.