Hello Dhiraj,

The subjects in COmmerce stream are:

• English
• Accountancy
• Economics 
• Statistics
• Business Studies

Optional Subjects in Commerce:

• Physical Education
• Mathematics
• Entrepeneurship
• Information Technology
• Pshycology
• Hindi
• Music
• e.t.c

As you can see IT is an optional subject, so you may choose it or not depending on your subject choice.

Hope I could solve your query.