On which border is the Indian Ocean?

The Indian Ocean is the third-largest of the world's oceanic divisions, covering 70,560,000 km 2 (27,240,000 sq mi) or 19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by the Southern Ocean or Antarctica, depending on the definition in use.

Explanation:

Indian Ocean does not lie along with any borders

c, to compete