A farmer can produce three crops, X, Y and Z, on his land. He decides to cultivate no more than two crops in any one year. The table shows six possible combinations of output units for the three crops. What is the opportunity cost of 1 unit of X?
- A1.33 units of Y
- B1.5 units of Y
- C0.5 units of Z
- D2.0 units of Z