Farmers who grow apple trees provide a benefit to the beekeepers in Australia. The beekeepers get a good source of nectar to help make more honey. Suppose that the external benefit created by growing apple trees is $0.20 per apple. The perfectly competitive equilibrium price of an apple is $1.

(a)On an appropriate diagram, label the equilibrium quantity in the Australian apple market as Q_market. Also show the quantity of apple that would maximise social surplus from the apple market as Q_optimum. Does Q_market equal to the perfectly competitive equilibrium quantity? Fully explain your answer and label the area of deadweight loss (if any).