Explain how the principle of separation of duties is violated in each of the following examples. Suggest one or more procedures to reduce the risk and exposure highlighted in each example.

a- An cashier received two checks from a customer, cashed the checks, and destroyed the documentation

b- An employee noticed that ten laptops were included in a shipment while the company ordered eight only. The employee puts the additional laptops behind the bin while unloading the vendor's delivery truck. She then picks up the items later in the day and puts them in her car without recording them in the inventory ledger

c- An employee and vendor engaged in a collusive relationship after the employee received $ 5,000 for the purchases made from this particular vendor.