Hello,

Your query isn't clear  which part A and B are you talking about, see generally speaking candidates from any stream are eligible to take up BCom, however in majority of colleges commerce stream is preferable, the required aggregate can be 50% or above, the admission process varies among colleges, it can be done through entrance test or based on the merit of the qualifying exam, explore  complete detailed information at https://www.careers360.com/courses/b-com-bachelor-of-commerce