yea, u can do CA, and co-major in finance.
To have finance major noted in your testemur, u need to have done:
FINS1612, FINS1613, FINS2624, FINS3616 + 3 finance options. (for double major)
FINS1612, FINS1613, FINS2624, FINS3616 + 4 finance options. (for single major)
Alternatively, if u wanna...