A5
A. if management fails to provide a written representation letter acknowledging its responsibility for the effectiveness of IC, the auditor will generally issue an unmodified opinion with additional explanatory language
B. when a material weakness exists, the auditor should issue an adverse opinion
C. when a significant deficiency exists, the auditor may issue either a qualified or adverse opinion
D. if management fails to provide a written representation letter acknowledging its responsibility for the effectiveness of IC, the auditor will generally issue either a qualified or adverse opinion