Ariel produces aluminum cubes, facing costs of C(A) - where A is the number 10 of cubes produced, and selling them on the competitive market for $30. Bjorn grows B2 beets next to Ariel's factory, facingcosts of C(B) - 5B- where B is the 100 20 number of beets produced, and selling them for $15 on the competitive market. Because aluminum pollution is harmful to beet production, the town council decides to impose a tax on aluminum cubes. If the socially optimal production levels are A* - 100 and B* - 500, what is the tax (per aluminum cube) that would induce efficiency? 10 In: O A. $10 B. $30 OC. $25 D. $15