Exhibit 20-6 -Refer to Exhibit 20-6.Let S₁ be the Supply Curve of the Supply

Multiple Choice

Exhibit 20-6

-Refer to Exhibit 20-6.Let S₁ be the supply curve of a firm.If S₂represents the supply curve of the same firm after the government imposes a per-unit tax,the tax is

A) $1 per unit.
B) $2 per unit.
C) $3 per unit.
D) -$1 per unit, i.e., a subsidy of $1.