Suppose a firm seeks to produce Q(T) units of output, with Q(1) of those units produced by one process, and Q(2) units produced by a second process. In this case, the firm will minimize its costs if..

a. it employs the same number of workers for both processes.
b. it uses only one process to produce all the units.
c. it employs more workers for the second process.
d. it uses different technology for each process.