The map shows the Italian Peninsula. A map titled Italian Peninsula. A key shows Mountains in teal, Plains in green, Hills in yellow. The Italian Alps are along the northern border of Italy. The Apennine Mountains run down the center of Italy. Sardina is west of Italy. Sicily is southwest of the bottom tip of Italy. The maps shows labels A through D. A is a river on the west side of the Apennine Mountains, going through Rome. B is a body of water east of Italy. C is a body of water south of Sardinia and west of Sicily. D is a body of water between Sardina, Italy, and Sicily. Which letter labels the Tyrrhenian Sea? A B C D