Which of the following statements is false with respect to the qualitative characteristics of useful accounting information?

a. All external and internal events must be fully disclosed in the accounting system.

b. Trade-offs are often necessary in evaluating relevant versus reliable information.

c. The full disclosure policy should be followed in all situations that would made a difference to financial statement users.

d. Comparability is concerned with different companies using the same accounting methods; whereas, consistency is concerned with a single company using the same accounting methods over time.