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

Downstream of Prayagraj (Allahabad), the Himalayan tributaries join the Ganga from west to east in this order: Gomati (joins near Ghazipur/Saidpur), then Ghaghara (joins near Chhapra), then Gandak (joins near Patna/Hajipur), and finally Kosi (joins near Kursela in Bihar). Hence the correct west-to-east sequence is Gomati – Ghaghara – Gandak – Kosi.