sarah owns a small flower shop and the industry is perfectly competitive. she is considering whether or not to hire an additional worker. the wage rate for the worker is $500 per week; the marginal product of the additional worker would be 100 units per week; and the price of the units produced is $10 per unit. what should sarah do? a hire the additional worker because the marginal revenue product exceeds the wage. b hire the additional worker because the marginal revenue product is below the wage. c raise the price of the flower arrangements that she sells. d not hire the additional worker because the marginal revenue product exceeds the wage. e not hire the additional worker because the marginal revenue product is below the wage.