A software firm has chosen to implement a differentiation strategy, offering its products in a software as a service (SaaS) platform with a monthly subscription in the cloud. Most of the firm's competitors are selling their products as a one-time purchase on a disc in a retail store. Which of these functional-level strategies will be critical to implementing this strategy?

Use a physical stopwatch to record the length of time it takes to run the program. calculate the difference obtained by calls to the method system.currenttimemillis() just before the start of the algorithm and just after the end of the algorithm. calculate the difference obtained by calls to the method system.currenttimemillis() at the start of the program and at the end of the program so that the elapsed time includes the display of the result. use the value returned by the method system.currenttimemillis() just after the end of the algorithm as the elapsed time.