The Figure Given Below Shows the Market for Shoes in the U.S

Multiple Choice

The figure given below shows the market for shoes in the U.S. The domestic price line with tariff lies above the international price line. D_d and S_d are the domestic demand and supply curves of shoes respectively. The tariff revenue of the U.S. government is shown by area _____.

A) a
B) (a + b)
C) c
D) (b + c + d)