The National Waterways-4 (NW-4) is associated with which rivers from among the following?

Details about NW-4
Stretch: It covers about 1,078 km across Andhra Pradesh, Tamil Nadu, and Puducherry.
Rivers involved:
Godavari River
Krishna River
Along with canals like Kakinada Canal, Eluru Canal, Kommamuru Canal, Buckingham Canal.
Purpose: Developed for inland water transport, cargo movement, and to boost trade and connectivity in southern India.
Declared: As a National Waterway in 2008 under the National Waterways Act.
Answer: NW-4 is associated with the Godavari and Krishna rivers