Suppose that a wholesaler expects that his monthly revenue, in dollars, for an electronic game will be R(x) = 170x -0.13x^2, 0 < x < 800 where x is the number of units sold. Find his marginal revenue and interpret it when the quantity sold is the following. (a) X = 200 $ Interpret the marginal revenue. O This is the additional revenue from the 201st unit. O This is the additional revenue from the 200th unit. O The sale of the 200th unit results in a loss of revenue of this amount O The sale of the 201st unit results in a loss of this amount. (b) 800 $ Interpret the marginal revenue. O This is the additional revenue from the 101st unit. O This is the additional revenue from the 200th unit. O The sale of the 101st unit results in a loss of this amount O The sale of the 800th unit results in a loss of revenue of this amount