Because it is a unit of account, money
A) increases transaction costs.
B) reduces the number of prices that need to be calculated.
C) does not earn interest.
D) discourages specialization.
B
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Sarah initially used her cell phone mostly to make important business calls
However, when she was informed that henceforth her phone bills would be reimbursed by her employer, she started using her cell phone to make frequent calls to her friends and relatives. This behavior is an example of ________. A) moral hazard B) a negative externality C) the prisoners' dilemma D) the free-rider problem
A monopoly might produce less than the socially optimal amount of pollution because
A) it likes to be a good citizen. B) it sets price above marginal cost. C) it earns economic profit. D) it internalizes the external costs.