Total Economic Surplus.

A hot dog cart can sell the Astro special to consumers downtown who have a $10 reservation price or sell outside the World Series to game goers who have a reservation price of $20. An equal number of hot dogs can be sold at each site with the marginal and average costs are $6 at each site.

How can the total economic surplus be maximized?

(a) sell only downtown for $10

(b) charge $10 at both locations and go back and forth

(c) go back and forth and price discriminate

(d) sell only at the World Series for $20