The correct answer is option 4: 1, 2, and 3.

Option 1 states that the West Coast of India is a high rocky, retreating coast. This means that the coast is characterized by tall cliffs or rocky formations, and it is also eroding or receding over time.

Option 2 states that the West Coast of India is dominated by erosional landforms. Erosional landforms are features that are carved or shaped by the force of erosion, such as sea cliffs, sea caves, and sea arches.

Option 3 states that the East Coast of India is a low sedimentary coast exhibiting depositional forms. A sedimentary coast is made up of sediments like sand, silt, and clay, which are deposited or accumulated over time. Depositional forms on the coast can include features like sandy beaches, barrier islands, and deltas.

In summary, all three statements are correct. The West Coast of India is a high rocky, retreating coast dominated by erosional landforms, while the East Coast of India is a low sedimentary coast exhibiting depositional forms.