A government-owned and -operated monopoly can be less efficient than a privately owned monopoly because

the government monopoly is not allowed to lower its costs.

B.government regulation turns a monopoly into a natural monopoly, which cannot earn a profit by producing the socially optimal output.

C.the government monopoly cannot control the quantity it produces.

D.the government monopoly lacks a profit motive and therefore doesn't have the right incentives to minimize costs.