Hello aspirant, there are two options, 

One is give CA/CPT foundation exam, no matter which subject you have chosen in 12. Just required to be passed in 12th.

Second is you can directly go for intermediate without giving CA/CPT foundation exam, but in this Case you should opt commerce with 55%.

I'll suggest you to chose second option as it will give you better knowledge of accountancy and business.

Hope it helped to clear your delimma.