If price exceeds the minimum of average total cost, then
comparing marginal revenue to marginal cost
(x) tells a firm the total amount of profit that it will
generate.
(y) indicates how much additional profit is generated by the last
unit of production.
(z) tells a firm whether it should increase output, decrease output
or remain at the present level of output.
A. (x), (y) and (z)
B. (x) and (y) only
C. (x) and (z) only
D. (y) and...