What are excellent jobs to have prior to applying for a Pharmaceutical Sales job?

I’m starting community college in a few days for either a Business Administration or Business Marketing degree. Which is better for Pharmaceutical Sales?

Not only which is better for pharmaceutical sales, but which is more useful and what is a better major in general? I always want to know I can find good work.

Secondly, as Pharmaceutical Sales is my goal job, what are jobs that would look great on a resume before I apply to Pharmaceutical companies?

All help is greatly appreciated.