Should I add math as a second major or should I do a CS certificate instead?

Which would be more beneficial to a career in data science after graduating undergrad? I’m currently a business analytics major and I would only have to take a few more classes to get either the second major (BSA) or the certificate (which focuses on python) but I don’t have the time to do both. I enjoy taking classes in both but I’m not sure what would be more worth it in the long run. I already do some coding in …

datascience major math