For Each of the Three Statements Below, Illustrate and Explain

For each of the three statements below, illustrate and explain why the statement is either True or False.
(a) "Other things equal, the imposition of a tariff by a (small) country on an imported good will have a less negative net welfare effect on the country than would the use of a'voluntary' export restraint (VER) by supplying countries of the import, even if the effects on domestic price and the quantity of the good imported are the same in the two situations."
(b) "Other things equal, if a country imposes an export tax of a given amount on a good,then the country can potentially enhance its welfare if it is a 'small' country but cannot possibly enhance its welfare if it is a 'large' country."
(c) "Other things equal, if a (small) country elects to assist an import-competing industry in expanding the industry's output by a given amount, the net welfare effect on the country will be the same whether or not the assistance is given in the form of an import tariff or in the form of a production subsidy to the industry."