Correct Option: D

The Sapta Sindhu (seven rivers) plays a prominent part in the hymns of the Rigveda. The Rigveda mentions river Kabul, Swat, Kurram, Gumal, Indus, Jhelum, Chenab, Ravi, Beas, Sutlej, etc. which proves that the settlements were in Afghanistan and Punjab as well.
The river Tapti is not mentioned in Rigveda.