Dear Riya, BC comes under OBC Category. However there are 2 sub categories in OBC depending upon the Annual Income of your family. They are OBC-NCL, OBC-Creamy Layer. OBC-NCL is the option for those candidates whose Annual Income from all sources is less than 6 lakhs per annum. And OBC Creamy layer is for those candidates whose Annual income from all sources is more than 6 lakhs per annum. Based on your family income, you need to choose either OBC-NCL or OBC-Creamy Layer.