Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions :
-(Table: Production of Good Z and Good X in Urbanville) Look at the table Production of Good Z and Good X in Urbanville. Suppose this table shows the production possibility frontier. Urbanville is producing at combination C and moves to combination D. What is the opportunity cost of this move?

A) 15 of X
B) 5 of Z
C) 15 of Z
D) 45 of X