Some of a firm's workers are made worse off by the introduction of a union

A major reason why it is difficult to lower the barriers to free trade is

A) that total benefits are less than total costs from free trade. B) the uneven distribution of gains and losses from free trade. C) the loss of jobs without any gain of jobs from free trade. D) the inability to compensate losers from free trade. E) that the barriers allow us to compete with cheap foreign labor.

Figure 4-25

Refer to . The price that sellers receive after the tax is imposed is
a.
P₁.
b.
P₂.
c.
P₃.
d.
impossible to determine from the figure.