Answer:
a. appreciate against the U.S. dollar.
Step-by-step explanation:
Using relative purchase power parity as example for explanation. Assume, the US inflation rate is 4 percent, the British inflation rate is 2 percent, and the current exchange rate is £0.60 to US$1.
The British inflation rate is 2% lower than the US inflation rate, so the British currency will appreciate by 2% against the US currency. So the exchange rate will be £0.60*0.98 = 0.588 to US$