Magna Graecia ("Great Greece") Was the Name the Ancient Greeks

Magna Graecia ("Great Greece") was the name the ancient Greeks used to describe which region?

A) The southern peninsula of Greece called the Peloponnese, which was home to Sparta-militarily the most powerful of all the Greek city-states
B) The western coast of Anatolia, site of the greatest number of overseas Greek settlements
C) Southern Italy and Sicily, sites of some of the largest and most powerful overseas Greek settlements, including Naples and Syracuse
D) The northern region of Macedonia, future home of the Greek conqueror Alexander the Great