I need help deciding what major to go into!?

so am graduating next year; and i have two different in mind, well actually three. Need help deciding in either going into aerospace engineering or mechanical engineering or business. Help me decide from knowledge you withhold in each different major. And which one is better long term and has more opportunities in the long term. Not just about the money; but is also good economical. And also if you live in texas and know about some great universities would help as well. thank you :)