Two firms, A and B, are engaged in a Cournot quantity competition game. They choose their respective quantities, qAfor firm A and 9B for firm B, simultaneously and 20-9B independently. It is known that firm A's reaction function is given by 94 and 16-9A firm B's reaction function is 9B = The Nash equilibrium quantity choices are (choose one): O 91 = 50 and 92 = 50 qA = 8 and 9B = 4 other 9A = 4 and 9B = 4