Indicate whether the following statements are "True" or "False" regarding benchmarking a company's tax position.

a. It is important in benchmarking exercises to ignore the effect of one-time items in comparing sustainable effective tax rates across time or companies.

b. When comparing effective tax rates, it is important to consider which components of the effective tax rate produce one-time effects, and which will be observed permanently.

c. One may apply the analysis to both the tax dollars involved and the underlying net assets of the entities.