Hi Sumedha,

I hope you are doing good. As I see, you are a bit confused with CS and IP subjects. When I was in class 12th, (expecting that subject definitions continues), IP stands for Informatics Practices in which student studies about Java GUI building along with MySQL. In class 12th,one needs to build a major project based on joining of MySQL with Java GUI, like Railway reservation system etc.

CS stands for computer science, in which students basically studies C++ and Object Oriented Programming concepts deeply. Its major syllabus has Basic and intermediate level of C++ along with few advanced topics.

As you have mentioned, Section A is compulsory but Section B1 and  Section B2 has CS and IP syllabus questions respectively. So, it must be optional to attempt any one of the section based on your subject chosen  as one has Java and other has C++ questions.

I suggest you to go for section which is of your domain. You can also concern to your subject teacher.

I hope it helps.

Thank you!