When a firm operates at less than full capacitya. managers should charge the cost of accelerating new capacity development against the current proposal for using excess capacity. b.treating that excess capacity as a free asset is a good idea in both the long- and short-run. c.treating that excess capacity as a free asset may accelerate the need for more capacity in the future. d.All of the above are true. e.Both (a) and (c) are true