What is the small physiographic region in georgia which is largest

Might not be correct-
Geographic Regions of Georgia. Georgia is crossed by five distinct physiographic provinces, based on similarities in land formations, elevation, rocks and minerals, soil, and other characteristics. They are the 1) Coastal Plain, 2) Piedmont, 3) Blue Ridge, 4) Ridge and Valley, and 5) Plateau.

Idk how to do this but I we'll take a guess C.