Hellow guys, Welcome to my website, and you are watching UPSC Mains: What OPTIONAL SUBJECT to choose? And when should you start appearing for OPTIONAL?. and this vIdeo is uploaded by Naman Shrivastava at 2023-03-14T21:25:47-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.