Rival in Consumption?	Rival in Consumption?
		Yes	No
Excludable?	Yes	A	B
Excludable?	No	C	C

In the table above, A indicates goods that are rival in consumption and are excludable; B indicates goods that are not rival in consumption but are excludable; C indicates goods that are rival in consumption but not excludable; and D indicates goods that are not rival in consumption and also not excludable.

Which box represents a common resource? Please explain Box A Box B Box C Box D