Mona loves the crisp, refreshing, lemon-lime flavor of Sprite. She can buy as many cans of Sprite as she wishes at a price of $0.75. On a given day, her willingness to pay is $1.50 for the first can, $1.00 for the second can, $0.85 for the third can, and $0.60 for the fourth can. If Mona is rational in deciding how many cans to drink, her consumer surplus from consuming Sprite that day will be:
a. $0.75
b. $0.95
c. $1.10
d. $3.95