Exhibit 3-13 Refer to Exhibit 3-13

Exhibit 3-13 Refer to Exhibit 3-13.The opportunity cost of producing an additional cake:

A) increases as the economy moves in a southeast direction along the production possibilities curve.
B) decreases as the economy moves in a southeast direction along the production possibilities curve.
C) remains constant as the economy moves in a southeast direction along the production possibilities curve.
D) equals zero.