Akbar is the General Manager of a large hotel. Jason is the hotel's Purchasing Manager, and his job is to negotiate contracts with suppliers for many essential items such as perishable goods (e.g., food and beverage) and durable goods (e.g., furniture, bed linen, computers, etc.). Lisa is the Receiving Manager for the hotel and in responsible for all goods received by suppliers. Over several months, Akbar has noticed a large shrinkage of inventory within the hotel. Numerous spoilage reports have been filled as well as claims by Lisa of incorrect delivery orders by various suppliers. Akbar suspects Jason and Lisa are colluding with each other to pilfer the inventory. what are three actions Akbar could do to help prove a collusion is taking place?