CA

CS , CMA, LL.B are fit with CA

Hey friend, yes whatever you will invest during your management course it will be return to you by getting good job. Its depends on you and your performance that how much salary you will get from the good companies. And yes CA will give you some benefit as your knowledge of accounts is high. A big companies like Deloitte eureka Forbs are giving preference to person who have knowledge and giving good performance. Minimum package is Rs.2.8 which is given by very good reputed company oracle. Highest which hired by international company is Rs.17 lakhs. So don't worry for that you can consider it as average of Rs.4-4.5 lakhs. Thank you

M.Sc is a better choice as compared to MCA.

Dear Parakavi,
CA consists 4 Phases
1.CPT- Entrance exam
2. IPCC
3 three years internship
4 Final
If one is willing to pursue CA right after 12th then he/she need to give CPT else after graduation one can directly get admission in IPCC.
For more information about course and course structure please visit.
WWW.ICAI.ORG.
All the very best

Nikhil, You need to check this with the college.

Selecting a specialization totally depends on your interest. You can also refer the link given below for various specialization with their scope: https://www.shiksha.com/10-most-popular-mba-specialisations-with-job-profiles-top-recruiters-article-11387-1

You can pursue your higher education in Canada.