hello aspirant,

b category is introduced by college management. it has two streams , 1. jee main rank

2. NRI quota(admission based on ipe marks.), jee main seats will be filled by general merit wise. nri students academic tution fee is much much higher than general candidates.

now come to management quota. every colleges has some management quota where they take admission including donation, you need tto give donation along with your tution fees to get admission to the college.