18-12 (Objective 18-6) The CPA examines all unrecorded invoices on hand as of February 28,2012 , the last day of the audit. Which of the following misstatements is most likely to be uncovered by this procedure? Explain. a. Accounts payable are overstated at December 31, 2011. b. Accounts payable are understated at December 31, 2011. c. Operating expenses are overstated for the 12 months ended December 31, 2011. d. Operating expenses are overstated for the two months ended February 28, 2012