A client for whom you have prepared the current tax return approaches you for advice and support for an audit covering the last five returns. You were not involved in the preparation of the previous four returns. The client has written notice from the ATO regarding the audit. What advice will you provide and what support will you give? (250270 words)

You are the tax agent. Advice the client. What support will you provide the client? Your answers must be relevant to the question.