Under New Accounting Standards Passed in 2006 Firms Must Report

Under new accounting standards passed in 2006 firms must report changes in accounting principle in the current and prior years as if the new accounting principle had been applied all along. The rational for this change was

A) using the same accounting principle in current and prior periods enhances the information content of reported earnings in forecasting future earnings.
B) conservatism.
C) comparability.
D) materiality.