Which among the following city was given as guru dkshina by Pandawas to Guru Dronacharya?

Which among the following city was given as guru dkshina by Pandawas to Guru Dronacharya? [SSC CAPF’s (CPO) SI & ASI, Delhi Police SI Exam 05/06/2016, Shift I]

          a) Rawalpindi

          b) Nainital

          c) Hastinapur

          d) Gurgaon