The Allnight Convenience Store Has Problems Attracting Employees to Work

The Allnight Convenience store has problems attracting employees to work the midnight shift. New employees for this shift are paid a twenty percent premium for working that shift. Which internal control procedure is being violated by The Allnight Convenience store?

A) To validate their accounting records, a company should have an audit by an external accountant.
B) External auditors will monitor internal controls.
C) External auditors will monitor internal controls
D) None are being violated.