a) Audit documentation (ISA 230) and overall objectives of independent auditors (ISA 200) consider audit documentation as a basis for good auditing. Discuss the importance of working papers clearly pointing out the different categories of working papers. b) Audit sampling (ISA 530) is important in auditing. Describe the following sampling methods in auditing, bringing out their strengths and weaknesses. I) Monetary unit sampling. ii) Haphazard sampling