Exhibit 18-1 -In Exhibit 18-1, the Opportunity Cost of 1 T-Shirt in of 1

Exhibit 18-1

-In Exhibit 18-1, the opportunity cost of 1 t-shirt in Costa Rica is

A) 0
B) 1/40 ton of rice
C) 3/4 ton of rice
D) 1 ton of rice
E) 2 tons of rice