Captain Renner is sailing the ocean, and his ship is low on supplies. He needs to reach land and restock before his crew mutinies and throws him overboard.

Looking at his map, Captain Renner estimates his ship's location and marks it with an X (shown below).

Assuming his ship is just as fast sailing in any direction, to which island should Captain Renner command his helmsman to sail?

a) island A

b) island B

c) island C