K Suppose you operate in a monopolistically competitive market. If you sell your good at a price of $20 and your average cost of production is $15: O A. you should expect competing firms to enter your market and shift the demand curve for your good to the left. O B. you should expect competing firms to enter your market and shift the demand curve for your good to the right. O C. your market may be in long - run equilibrium. O D. you cannot be in short - run equilibrium