Which of the following is NOT a reason wtry the aggregate expendlures increase when the price level falls.

A$.$ The rnal value of houschold wealh rises, increasing consumption.

B$.$ Reduced demand for moncy at lower price levels reduces the interest rate and increases investment

C$.$ Consumers substitute from higher$-$priced goods to lowar$-$priced goods.

D$.$ A lower U$.$S price level relative to other countries increases net exports