Exhibit 34-9 Country X Country Y Good A Good B Good A Good B 90 0 60 0 60 10 40 10 30 20 20 20 0 30 0 30 Refer to Exhibit 34-9. For country X, the opportunity cost of producing one unit of good A is __________ unit(s) of good B. Group of answer choices 2 1/5 1/2 1/3 1