Indicate by a (), (), or (0) whether each of the following events would probably cause average annual inventory holdings to rise, fall, or be affected in an indeterminate manner:
a. Our suppliers change from delivering by train to air freight. __________
b. We change from producing just-in-time to meet seasonal demand to steady, year-round production. __________
c. Competition in the markets in which we sell increases. __________
d. The general rate of inflation rises. __________
e. Interest rates rise; other things are constant. __________