3. Internally generated evidence held by the client includes: a) bank statements. b) correspondence with the client's lawyers. c) copies of invoices sent to customers. d) expert valuations. 4. The first stage when an auditor considers the use of an expert is: a) assessing the objectivity of the expert b) assessing the need to use an expert. c) assessing the expert's report d) determining the scope of the work to be carried out