Which major to choose on UC & CSU app?

What major should my son choose on the UC & CSU app to increase his chances of acceptance? He ultimately is interested in finance so Business or Econ comes to mind, but is there a less competitive major he could apply under?

Here are his stats:
California Resident
SAT: 1220 (Eng 560, math 660)
6 APs: Calc AB, Calc BC, Lang, CSP, AP Econ/Govt, AP World History
GPA: UW 3.45, W: 3.90
Major: Econ or Math
NHS, volunteer at school for autistic kids for 3 years, math tutor