Answer the next question(s) on the basis of the output data for a firm given in the table to the right. Assume that the amounts of all non-labor resources are fixed. You may wish to calculate the marginal product (or output) per worker. Number of workers 0 1 2 3 4 5 6 Total Product (units of output) 0 40 90 126 150 165 180 A) negative. Refer to the data table above. The marginal product of the sixth worker is: B) 30 units of output. C) 180 units of output. Marginal Product D) 15 units of output.