Pollution rights can be traded and are always efficient.

If a perfectly competitive market becomes a monopoly and the costs do not change, which of the following allocations of costs and benefits applies?

A) The producer benefits, but consumers and society are harmed. B) The producer and society are harmed, but consumers benefit. C) The producer and society benefit, but consumers are harmed. D) The producer is harmed, but consumers and society benefit.

_____ has a causal effect on _____.

A. Income; unemployment B. Height; health C. Income; consumption D. Age; wage