Which statement best differentiates between the Rust Belt Region and the rest of the United States? ( 1 point )

A.) The Rust Belt is a functional region characterized by similar historic economic activity, specifically, manufacturing

B.) The Rust Belt is a perceptual region that is commonly referred to as such because of its past prominence as an ecoregion

C.) The Rust Belt is a functional region characterized by similar historic economic activity, specifically, agriculture.

D.) The Rust Belt is a formal region surrounded by functional regions

A.) The Rust Belt is a functional region characterized by similar historic economic activity, specifically, manufacturing.