The expenditures method is most appropriate when the subject spends illicit income on consumables that do not create lasting assets or increase net worth. Examples include travel, entertainment, food, lodging, clothing, and other lifestyle expenses. If the fraud examiner used the net-worth or asset method, those expenses might not appear as asset increases because the money has already been consumed. The expenditures method focuses on whether the subject's spending exceeds known legitimate sources of income. Option A points more toward lifestyle or net-worth concerns. Option B suggests the asset method because assets were acquired or debts were paid down. Option D is not the correct situation. Therefore, when illicit funds are spent on consumables, option C is correct.