The correct option is A Only 1, 2 & 4
The rivers that originate in Western Ghats and flow towards west are Periyar, Bharathappuzha, Netravati, Sharavathi, Mandovi etc. The west flowing rivers of Western Ghats are fast-moving, owing to the short distance travelled and steeper gradient. This makes Western Ghats more useful than Eastern Ghats in terms of production of hydroelectricity. The steep gradient makes the Jog Falls on Shravasthi River in Karnataka as one of the most spectacular waterfalls in India. Narmada and Tapti although don’t rise from Western Ghats but flow westwards.
The rivers that originate in Western Ghats and flow towards east include three major rivers viz. Godavari, Krishna and Kaveri, and many smaller / tributary rivers such as Tunga, Bhadra Bhima, Malaprabha, Ghataprabha, Hemavathi, Kabini. These east flowing rivers are comparatively slower moving and eventually merge into larger rivers such as the Kaveri and Krishna