what's the answer?

In the following graph of a market, a legal price ceiling of $3.50 will result in: $4.50 4.00 S 3.50 3.00 2.50 Price per dozen bagels 2.00 1.50 1.00 D 0.50 0.00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Quantity (thousands of dozens per month) O No shortage or surplus A surplus of 8 units O A shortage of 8 units O A black market price greater than $3.50