On which of the following sets of rivers are Nagarjunasagar, Ukai, Hirakud, and Thein Dam located respectively?
(a) Krishna, Mahanadi, Godavari, Tapi
(b) Cauvery, Krishna, Narmada, Beas
(c) Krishna, Tapi, Mahanadi, Ravi
(d) Godavari, Brahmaputra, Narmada, Yamuna