Assume the Demand for Watermelons Is Downward Sloping

Assume the demand for watermelons is downward sloping. An increase in price from $1 per pound to $2 per pound

A) could have been caused by an increase in supply.
B) will cause a larger quantity of watermelons to be demanded.
C) will cause demand to decrease.
D) could have been caused by an extra-large crop yield.
E) will cause a smaller quantity of watermelons to be demanded.