With reference to the Indus river system, of the following four rivers, three of them pour into one of them which joins the Indus direct. Among the following, which one is such river that joins the Indus direct?

The Indus river system is complex, with several major tributaries forming the Panjnad, which then joins the Indus River. The question implies a specific relationship where three listed rivers pour into one of the listed rivers, and that one then joins the Indus direct. Tracing the flow: The Jhelum and Ravi rivers join the Chenab River. The Beas River joins the Sutlej River. Subsequently, the Chenab River (after receiving Jhelum and Ravi) and the Sutlej River (after receiving Beas) merge to form the Panjnad. It is the Panjnad that directly joins the Indus River. However, among the given options, if we consider the ultimate confluence where the waters from the eastern rivers converge before joining the main Indus, the Sutlej is a significant river that carries the waters of the Beas and then merges with the Chenab to form the Panjnad. In the context of simplified representations for such questions, the Sutlej is sometimes considered the primary conduit from the eastern rivers that eventually links up to the main Indus system after incorporating other tributaries, effectively being the final major river from the eastern side before the grand confluence that joins the Indus direct.