Microeconomics is concerned with studying which of the following?

Which of the following is NOT correct about the effects of a tariff on an imported product?

A) Tariffs benefit domestic producers by raising price and domestic output. B) Tariffs increase government revenue. C) Tariffs mean higher prices and less consumption for consumers of the product. D) Tariffs increase the efficiency of how resources are allocated.

Using the above figure, if the government levies a new unit tax in this market, S represents the original supply curve, and St represents the after-tax supply curve, then the revenues that the government collects from imposing this tax is represented

on this graph by A) OAEG. B) OBCG. C) BAEC. D) CEF.