Could you plz identify the foreign currency and home currency in this question.(just need to explain what currency is foreign currency and what is home currency, no need to solve this question, it is just an example)

The inflation rates in the U.S. and Iceland are expected to be 4% per annum and 7% per annum, respectively. If the current spot rate is $.1050, then, according to Relative Purchasing Power Parity, the expected ISK / USD spot rate in three years is