7. The following represents the inflation rates of foreign country X for the past 4 years: Year 1: 35% Year 2: 20% Year 3: 25% Year 4: 30% Which statement is correct about the selection of a functional currency for country X at the end of year 4. a. Country X is highly inflationary; the US dollar must be used b. Country X is highly inflationary; the foreign currency must be used c. Country X is not highly inflationary; the US dollar must be used d. Country X is not highly inflationary; the foreign currency must be used e. Country X is not highly inflationary; either the US dollar or the foreign currency may be used depending on the factors to determine the functional currenc