Which one of the following pairs is not correctly matched ?
(a) Indus : Shyok
(b) Ganga : Gandak
(c) Godavari : Musi
(d) Krishna : Tungabhadra
(c) Musi is the tributary of Krishna, Panganga, Wanganga, Wardha, Indiravati, Pravada etc. are the tributaries of Godavari.