1. In the Krugman model of trade, where there are economies of scale and monopolistic competition, one ofthe following indicates the situation for the typical firm in the long run (where = price of output, =quantity of output, = the wage rate, and are constant cost parameters that are > 0, and the numberof employment = + \times )?a. ( + \times ) \times = b. ( + \times ) \times = c. ( + \times ) \times < \times d. ( + \times ) \times = \times