With the cumulative average-time learning model a. the cumulative time per unit declines by a constant percentage when production doubles. b. the time needed to produce the last unit declines by a constant percentage when production doubles. c. costs increase in total by a constant percentage as production increases. d. the total cumulative time increases in proportion to production increases.
A.
the cumulative time per unit declines by a constant percentage when production doubles.
B.
the time needed to produce the last unit declines by a constant percentage when production doubles.
C.
costs increase in total by a constant percentage as production increases.
D.
the total cumulative time increases in proportion to production increases.