A Nation Can Produce Two Products: Steel and Wheat

Multiple Choice

A nation can produce two products: steel and wheat. The table below is the nation's production possibilities schedule. A change from combination C to B means that

A) 1 unit of steel is given up to get 75 units of wheat.
B) 2 units of steel are given up to get 75 units of wheat.
C) 1 unit of steel is given up to get 15 more units of wheat.
D) 2 units of steel are given up to get 15 more units of wheat.