Which of the following factors affect the movement of ocean currents?
1. Gravitational Force.
2. Bottom reliefs of the ocean basin.
3. Density difference.
4. Shape of coastline.
Select the correct answer using the codes given below:
1
1 and 2 only
2
1, 3 and 4
3
2 and 4 only
4
1, 2, 3 and 4