100 :60 i 80 M53 386883 10 MP3 1002003004005006007003009001000 Quantity The government could restore efciency in this market by imposing a A. tax of $30 per unit B. subsidy of $30 per unit C. tax of $40 per unit D. subsidy of $40 per unit E. tax of $50 per unit F. subsidy of $50 per unit