With reference to the Himalayan rivers joining Ganga downstream of Prayagraj from West to East, which one of the following sequences is correct?

With reference to the Himalayan rivers joining Ganga downstream of Prayagraj from West to East, which one of the following sequences is correct?
(a) Ghaghara — Gomati — Gandak — Kosi
(b) Gomati — Ghaghara — Gandak — Kosi
(c) Ghaghara — Gomati — Kosi — Gandak
(d) Gomati — Ghaghara — Kosi — Gandak
Correct Answer: (b) Gomati – Ghaghara – Gandak – Kosi
Explanation:
The correct sequence of Himalayan rivers joining the Ganga downstream of Prayagraj from West to East is: (b) Gomati – Ghaghara –
Gandak – Kosi.