Commerce

Hello Jacintha
The courses that you have mentioned are both related to IT (Information Technology). They dont have much difference but a minor distinction is in background. Both the sides will need a little knowledge of maths. However, you may opt according to your choice.
Hope my suggestion will help you . All the best for your future.
Thank you

Please check with Symbiosis Skills and Open University as this is newly started so he has better chance to get admission there. Apart from this, he can do it from Pune University externally and also search for low profile or newly started colleges where chances are high.

Ethical hacking is basically about learning how to find security vulnerabilities in IT systems. If you want to learn cyber security you can enroll for any of the training programs by http://pune.cssrl.in The training is possible in regular classroom or in online mode. The career options in the field of cyber security are growing a lot these days.
https://www.youtube.com/attribution_link?a=Jkge3N1QJIlaGamq&u=/watch?v=odgZddgDfOs&feature=em-share_video_user

There isn't any relation among 12th marks and B.Com subject as you should also know it, then why are you thinking of so? If you have more marks in 12th you may repeat just like class improvement. Go through the subjects and your interest.

If you want to do CA, then I will suggest you to go for B.Com as it is related and you will find the similar subjects also. BBA is related to business administration. You will read about accounts, tax, finance, etc. in B.Com as well as in CA also.

Science will provide broader opportunities but it will be slightly tougher.

Go for science stream because it will give you an option to choose a variety of different courses after 12th, while if done Commerce you would stuck with just a few ones. Ask yourself what you want to do. If you have a plan then go for it else choose science.