If the x-axis variable increases while the y-axis variable decreases, the variables x and y are negatively related

Which of the following equations correctly represents nominal exchange rate?

A) Nominal exchange rate = units of foreign currency/1 unit of domestic currency B) Nominal exchange rate = 1 unit of domestic currency/100 units of foreign currency C) Nominal exchange rate = 100 units of domestic currency/1 unit of foreign currency D) Nominal exchange rate = units of foreign currency/100 unit of domestic currency

Assume expectations of both prices and productivity are accurate,use the PS/WS relations, graphically illustrate and explain the effects of an increase in the productivity on the natural rate of unemployment

What will be an ideal response?