Which one of the following statements is TRUE?

a. One tool of corporate governance is the location of the company headquarters.

b. One tool of corporate governance is the use of accounting control systems.

c. One tool of corporate governance is a company's tax avoidance strategy.

d. An example of an agency relationship is when a supervisor hires a forklift operator.

e. An example of asset switching is an option to exchange one piece of real estate for another.