If inflation is 2% in the U.S. and 4% in Norway, then according to relative purchasing power parity,

	a.	the U.S. nominal exchange rate (E $/Norway) will be rising by 2% per year
	b.	the U.S. nominal exchange rate will be falling by 2% per year
	c.	the U.S. real exchange rate (q U.S./Norway) will be rising by 2% per year
	d.	the U.S. real exchange rate will be falling by 2% per year