Consider the following statements regarding the river Mahanadi 

i) It is the fourth largest river in peninsula India after Godavari, Krishna, and Narmada.

(ii) The catchment area of the river extends to Chhattisgarh, Madhya Pradesh, Odisha, Jharkhand, and Maharashtra.

iii) Its basin is bounded by the Central India hills on the north, by the Eastern Ghats on the south and east, and by the Kaimur range on the west.

(iv) It rises from a place near Sihawa, in the Dhamtari district of Jharkhand.

Which of the above statements are correct?