Find the best and the worst possible total surplus in the context of the example discussed in this section with a price ceiling equal to 16. Illustrate the best case scenario with a supply and demand graphic similar to Figure 2.

30 28 buyers 26 surplus 24 price floor 22 21 deadweight sellers' loss thousand US$ 20 surplus 18 16 14 12 10 2 4 5 6 7 8 9 10 traders Figure 2: Buyers' surplus, sellers' surplus and deadweight loss with price floor (best case scenario)