Consider the following setup for a perfectly competitive market: Suppose that for the firm, TC =400+ Q-, and MC =20. For the corresponding market, suppose that demand 1 is given by P = 200 - - Q and supply is given by P = = Given the firm's profits, is this situation sustainable in the long run? That is, will firms have an incentive to enter or leave the market? O Not sustainable, firms will enter the market. O Not sustainable, firms will leave the market. O Sustainable, firms will neither enter or leave the market. O Cannot be determined