Today the exchange rate between the U$.$S dollar and the Japanese yen is $97\mathrm{.}91($Y$/$$$).$

A year ago the rate was $98\mathrm{.}91($Y$/$$$).$

a$.$ Which currency appreciated and which currency depreciated over the course of the year?

b$.$ Do you think that over the last year inflation was higher in the United States or Japan?