Following are five separate cases involving internal control issues.

Required:

For each case, identify the principle$($s$)$ of internal control that is violated.

a$.$ At Tico Company, Julia and Trevor alternate lunch hours. Julia is the petty cash custodian, but if someone needs petty cash when she is at lunch, Trevor fills in as custodian.

b$.$ Carla Farah's manager has told her to reduce costs. Carla decides to raise the deductible on the plant's property insurance from $$5,000$ to $$10,000.$ This cuts the property insurance premium in half. In a related move, she decides that bonding the plant's employees is a waste of money because the company has not experienced any losses due to employee theft. Carla saves the entire amount of the bonding insurance premium by dropping the bonding insurance.

c$.$ Chi Han receives all incoming customer cash receipts for her employer and posts the customer payments to their respective accounts.

Insure assets and bond key employees.

Maintain adequate records.

Perform regular and independent reviews.

Separate recordkeeping from custody of assets.

d$.$ Marker Theater has a computerized order$-$taking system for its tickets. The system is backed up once a year.

e$.$ To ensure the company retreat would not be cut, the manager of Lavina Company decided to save $.$ money by canceling the external audit of internal controls.