answer all the required please

Anna Abraham is the accounts payable clerk for Jiffy Delivery Service. This company runs 10 branches in the San Diego area and the company pays for a variety of expenses. Anna writes the checks for each of the vendors and the Controller signs the checks. Anna has decided she needs a raise, and the Controller has told her to wait for six months. Anna has devised a plan to get a raise on her own by doing the following: She creates a new vendor for her friend's business with the name John's Car Detailing She also creates two purchase orders for car detailing services from John's for $75 and $70. She writes checks to John's Car Detailing to pay these invoices. She knows the Controller will sign all checks, only looking at the checks over $100. . She delivers the checks to John, who will deposit the checks in his bank account. John then writes a check to her for $145. Required 1. What are some factors that allowed this type of unethical behavior to happen? 2. Eventually, what will be the effect of her actions? 3. What can the company do to prevent this type of behavior? (include examples of controls that can be implemented)