Why does Infosys hire more engineers from South India?

I'm not sure if there's a bias, but it could be because of the fact that Infosys founders belong to South India and have natural inclination towards South Indian engineers. According to TOI- #-Link-Snipped-# Infosys made highest number of campus placements offers in Karnataka. Out of 25,798 total offers, Karnataka: 4,079 against 3,334 in Tamil Nadu and 2,235 in Andhra Pradesh.

Your take on this?