In the land of Waterfall. polished stones and red roses are produced. From 2016 to 2017, the prices of both stones and roses increased and the quantity of stones produced decreased white rose production remained unchanged. Which of the following statements is true? Nominal GDP may have increased or decreased and real GDP increased. Nominal GDP may have increased or decreased and real GDP decreased. Nominal GDP increased but real GDP may have increased or decreased. Nominal GDP decreased but real GDP may have increased or decreased