80-5: The ship-building industry of Bangladesh is a duopoly with only two companies, namely Boatman and Mariners. Their output strategy is 50 or 40 ships a year. Examine the Revenue Matrix given below. In 2021, they are in the 3rd Quadrant with revenue 1600 million Taka each. Describe the duopoly game. Is 2021 a Nash equilibrium? Explain your answer briefly. * Revenue Matrix for Two Ship Building Companies in a Duopoly (Price in million Taka each ship) 10 points