For each of the following units, identify whether the most appropriate responsibility center form is a cost center, a profit center, or an investment center and why you have made that choice.
a. A laboratory in a hospital
b. A restaurant in a department store
c. The computer services group in an insurance company
d. A maintenance department in a factory
e. A customer service department in a mail-order company
f. A warehouse used to store goods for distribution in a large city
g. A publishing company acquired by a diversified corporation.