Marc puts prices on surfboards and skateboards at his sporting goods store. He is using money as a unit of account

One of the economic costs of holding currency is that

A) it fulfills no transactions role. B) it fulfills no precautionary role. C) its real value always increases. D) it earns no interest income.

In a perfectly competitive market, an individual ________ has ________ influence over the market price of the good or service being sold

A) buyer; basically no B) seller; basically no C) buyer; a great deal of D) seller; a great deal of E) Both A and B are correct.