Exhibit 15-1 Production Possibilities Curves in Exhibit 15-1, the Production

Exhibit 15-1 Production possibilities curves In Exhibit 15-1, the production possibilities curves of wheat and corn for Nabia and Pada are presented. In Nabia the cost of producing one more unit of corn is equal to:

A) 4 units of wheat.
B) 4 units of corn.
C) 1\4 unit of wheat.
D) 15 units of wheat.
E) 60 units of wheat.