An application vendor wants to choose a fault tolerant platform for their new application.  The application benefits from multiple processors and has been tested on Red Hat Advanced Server 3.  To determine the memory requirements for the application， which of the following is the best procedure？（）

The application should be tested and baselines should be measured with simulated user loads.

The application should be tested with the minimum amount of memory then increase the memory in increments until an acceptable response is achieved.

The application should be tested with differing amounts of memory and the fastest response time is reached it should be used as the acceptable configuration.

The application should be tested with the maximum amount of memory then decrease the memory in increments until an acceptable price/performance ratio is reached.