The graphs show the demand curves for a public good in a two‑person economy. map out the market demand curve for this public good, and determine the optimal amount of production. market for public good price ($) output 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 marginal cost what is the optimal level of production for this public good? optimal output: units