6. Consider the Cournot duopoly with the inverse market demand P(Q) = 100 - Q. Each firm i=1,2 has the total cost function C(q;) = 10qi. Also, firm 2 has the capacity constant at 20 units, that is, q1 $ 20. (a) Find the best response function of each firm q; = BR(q;), i = 1,2, ji. (Note: depending on q; the formula for the best response function can be different). (b) Find the equilibrium quantities q of both firms and the market price pc