In one of the case studies in the textbook, Albert Miano, the facilities supervisor for a popular magazine, submitted phony invoices. When Miano received the checks for the phony invoices, he forged the contractor's signature. He then endorsed the check in his own name. How was the fraud caught?
a. The auditors found a discrepancy in the invoices that were submitted.
b. The new chief of internal audit found it by accident.
c. A vendor received a check by mistake and called the accounts payable department.
d. The external audit found it in an audit sample of cancelled checks.

Caleb construction (cc) incurs supervisor salaries expense in the construction of homes. if cc manufactures 100 homes in a year, fixed supervisor salaries will be $400,000. with the current construction supervisors, cc's productive capacity is 150 homes in a year. however, if cc is contracts to build more than 150 homes per year, it will need to hire additional supervisors, which are hired as full-time rather than temporary employees. cc's productive capacity would then become 200 homes per year, and salaries expense would increase to $470,000. how would cc’s salaries expense be properly classified? fixed variable mixed stepped curvilinear