When consumers change phone service providers they are frequently required to maintain service with the provider for a specified time period. This is an example of a
a. cost to a producer to exchange equipment in a facility when new technologies emerge.
b. cost of changing the firm's strategic group.
c. one-time cost suppliers incur when selling to a different customer.
d. one-time cost customers incur when buying from a different supplier.
Answer: one-time cost customers incur when buying from a different supplier.