Suppose That Today 1 British Pound Exchanges for $1

Suppose that today 1 British pound exchanges for $1.60.If next week 1 pound exchanges for $1.70,it is clear that

A) The pound has depreciated relative to the dollar.
B) The dollar has appreciated relative to the pound.
C) Both currencies have appreciated.
D) The dollar has depreciated relative to the pounD.The dollar has depreciated relative to the pound because with the new exchange rate,it takes more dollars to get the same amount of British pounds.