This Graph Shows One Consumer's Demand for Ice Cream at the Student

Multiple Choice

This graph shows one consumer's demand for ice cream at the student union:
When price is $2 per scoop,each student's consumer surplus is determined by

A) the difference between maximum willingness to pay of $4.50 and $2,or $2.50.
B) the area of the triangle of dimension ($4.50 - $2.00) high and 6 long = $7.50.
C) the difference between each student's maximum price of $4.50 and $2 times the number of scoops,or $2.50 times 6 = $15.
D) The area of the triangle of dimension $4.50 high and 8 long = $18.