Deadweight loss measures the

A、a.
loss in a market to buyers and sellers that is not offset by an increase in government revenue.;

B、b.
loss in revenue to the government when buyers choose to buy less of the product because of the tax.;

C、c.
loss of equity in a market due to government intervention.;

D、d.
loss of total revenue to business firms due to the price wedge caused by the tax.