KBC 16: Who is Amitabh Bachchan's favorite actress? 'Big B' tells Karthik and Vidya what's on his mind!

Kaun Banega Crorepati 16 : Karthik Aaryan and Vidya Balan reached KBC to promote their upcoming film 'Bhool Bhulaiya 3', the promo video of which is going viral on social media.