K World Metals and Zhing Xu Metals are the only major producers of a high-grade titanium wire. Each company has developed a titanium wire product and aggressively advertises it. The two firms are locked in a duopolists' dilemma. What is the duopolists' dilemma facing World Metals and Zhing Xu Metals? **** The duopolists' dilemma facing World Metals and Zhing Xu Metals is OA. how to increase advertising but at the same time lower average total cost OB. what they can do to protect their control of the titanium wire market OC. whether they could trust each other to raise the price of a roll of titanium wire and decrease advertising to raise economic profit OD. for each firm to be successful in eliminating the other firm from the titanium wire market