What product is being sold most in Indian e-commerce site?

One can earn a profitable amount from the various online products which are sold from e-commerce websites. There are having some popular e-commerce websites selling products of various categories and earning a great revenue. According to me what I have seen from the graph by recent research that the most product category in the Indian e-trading industry are such as Apparel, Electronic goods, Books. An Indian e-commerce site is generating a good ROI from the above categories.