There Are Several Reasons Why the Aggregate Demand Curve Is

There are several reasons why the aggregate demand curve is downward sloping. Which of the following correctly describes one of these explanations?

A) A fall in the price level, holding foreign prices and the exchange rate constant, increases net exports.
B) A rise in the price level lowers the interest rate and increases investment spending.
C) A rise in the price level raises the purchasing power wealth and increases desired consumption.
D) A rise in the price level raises interest rates and increases investment spending.