An airline company wants to improve its baggage handling process by using real-time analysis of data from new RFID tags affixed on customer luggage. The new process will automate baggage scanning at every transfer point, and the real-time data analysis will inform resource allocation along the entire baggage transportation chain. The airline sets up a month-long experiment to test this process improvement by collecting weekly metrics. Which of the following are appropriate metrics to test the improvement specifically due to the analytical enhancement? (1) baggage handling cost (2) lost baggage percentage (3) customer retention