Which one of the following combinations of given perspective and statement matches BEST?

A: From a business perspective, computing power and architecture are major parameters for fine- tuning the system. B: From a user perspective, missing feedback from the system when processing a request it is a problem. C: From a technical perspective, the number of concurrent user and the types of transactions performed are major elements. D: From a business perspective, the choice of performance test tools strongly depends on the applied test techniques.