The Number of "Gore in 2004" Buttons Demanded on a Certain

Multiple Choice

The number of "Gore in 2004" buttons demanded on a certain university campus is given by D(p) = 100 - p, where p is the price of buttons measured in pennies.The supply function is S(p) = p.The current administration manages to enforce a price ceiling of 40A2 per button.The effect on net consumer's surplus is

A) an increase of $5.50.
B) an increase of $3.50.
C) no change.
D) a decrease of $3.50.
E) a decrease of $5.50.