Refer to the table, which describes a nation's PPF. What does point c mean?
A) If 8 units of X are produced, then 28 or more units of Y can be produced.
B) The opportunity cost of one less unit of X is 3.5 units of Y.
C) If 8 units of X are produced, then at most 28 units of Y can be produced.
D) The opportunity cost of one more unit of X is 3.5 units of Y.
Answer: C