Which of the following statements about trade protection is correct?
- AA tariff results in a greater decrease in demand for an import the lower is its price elasticity of demand.
- BEmbargoes are only an effective trade barrier when the demand for imports is price-elastic.
- CExport subsidies to domestic firms will prevent the dumping of foreign products in the domestic market.
- DQuotas are less effective than tariffs for raising government revenue.