From an economic point of view, an activity does not have a cost when

From an economic point of view, an activity does not have a cost when
  • A.
    someone else pays for it
  • B.
    the returns are greater than the cost
  • C.
    the choice involves giving up nothing
  • D.
    the government pays for it
  • E.
    it is paid for from a gift
Correct Answer: Option C
Explanation
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