The map shows physical features in and around the Arabian Peninsula. A Map of the Arabian Peninsula with labels A through G. Locations are in reference to the peninsula. C is a body of water on the west side. D is a larger body of water to the south. F is a body of water on the east side. E is a body of water inland, northeast of the peninsula. A is a body of water inland, east of E. B is a body of water east of A. G is a river on a landmass east of the peninsula.

Which letter on the map identifies the Caspian Sea?

A
B
C
D