please provide answer a b and c.plz

Assume that Airbus and Boeing are the only firms that manufacture planes in the world. Answer the questions below. a. What is the market structure in which Airbus and Boeing operate? Explain your answer using the market characteristics for the two firms (Airbus and Boeing). (6 Marks) ANSWER a): b. Examine the market entry barriers that deter other firms from entering the market structure for Airbus and Boeing (4 Marks) ANSWER b): C. What do you understand by the term "Mutual Interdependence" for Airbus and Boeing. (2 Mark) ANSWER C)