An auditor reviews the accounts receivable (AR) aging report after which she performs substantive analytical procedures to determine a reasonable allowance for doubtful accounts (AFDA). What assertion is she trying to satisfy? O a. occurrence assertion O b. existence assertion OC valuation assertion O d. rights and obligations assertion The interim financial statements are usually a. not compiled by the auditors. O b. checked for compliance by the auditors. O c. not reviewed by the auditors. O d. not audited by the auditors. What level of assurance is provided by Canadian standards for review engagements? O a total assurance O b. no assurance O c. limited assurance O d. reasonable assurance