Which of the following could cause nominal GDP to decrease, but real GDP to increase?

a. The price level rises, and the quantity of final goods and services produced falls.
b. The price level falls, and the quantity of final goods and services produced falls.
c. The price level stays the same, and the quantity of final goods and services produced rises.
d. The price level rises, and the quantity of final goods and services produced rises.
e. The price level falls, and the quantity of final goods and services produced rises.