a$.$ Cash registers contain locked electronic files that keep records of each sale.b$.$ The company divides responsibility for a transaction between multiple departments.c$.$ Detailed records of inventory are kept to ensure items lost or stolen do not go unnoticed.d$.$ Prohibit the recordkeeper from having control over cash.e$.$ Purchased an insurance $($bonding$)$ policy against losses from theft by a cashier.f$.$ The company's internal auditors frequently assess the performance of internal controls.