Countries A, B and C belong to the WTO, and Countries X and Y do not. Country A charges a 7% tariff on clothing imported from Country B. Countries C, X, and Y also export clothing to Country A. Under the Most Favoured Nation (MFN) rule:

	a.	Country C gets an automatic 7% tariff on clothing exported to Country A.
	b.	Country C must petition Country A under the WTO to get a 7% tariff on clothing exported to Country A.
	c.	Countries X and Y are entitled to a 7% tariff on clothing exported to Country A.
	d.	Countries C, X, and Y are all entitled to a 7% tariff on clothing exported to Country A.