Which one of the following pairs of rivers and tributaries is not corr

Which one of the following pairs of rivers and tributaries is not correctly matched ?

Godavari : Indravati
Ganga : Penganga
Krishna : Bhima
Luni : Sukri
This question was previously asked in
UPSC NDA-2 – 2017
The pair Ganga : Penganga is not correctly matched.
– Indravati is a major tributary of the Godavari River, flowing through Chhattisgarh, Maharashtra, and Odisha. (Correct match)
– Penganga is a river in Maharashtra and a major tributary of the Wardha River, which in turn is a tributary of the Wainganga River. The confluence of the Wardha and Wainganga rivers forms the Pranahita River, which is a major tributary of the Godavari River. Penganga is *not* a tributary of the Ganga River. (Incorrect match)
– Bhima is a major tributary of the Krishna River, flowing through Maharashtra and Karnataka. (Correct match)
– Sukri River is a tributary of the Luni River, flowing in Rajasthan. (Correct match)
The Ganga River system and the Godavari River system are two separate major river basins in India. Tributaries of the Ganga include Yamuna, Ghagra, Gandak, Kosi, Son, etc. Tributaries of the Godavari include Pravara, Purna, Manjira, Penganga, Wardha, Wainganga, Indravati, Sabari, etc.