Compare the pre-entry equilibrium (i.e., the monopoly equilibrium found at point a)) and the post-entryequilibrium (i.e., the Bertrand equilibrium found at point b)) in terms of equilibrium price, quantity, industryprofit, consumer surplus, total surplus, degree of concentration (Herfindhal index) and degree of marketpower (Lerner index).Comment on your results focusing on: i) the sources of any difference in industry profit, consumer surplusand total surplus; ii) the effect of firm N's entry on concentration and market power