25. A highway authority makes sure the toll on a freeway is sufficiently high so that it never becomes congested. This implies: a. The freeway is a public good since government maintains it. b. The freeway is a common good. c. The freeway cannot be either a public or common good since the highway authority is using the exclusion principle. d. The freeway would be a public good if the toll were not causing rival consumption on the freeway.

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