A cisco wcs version 4.0 has been installed on a server with a dual pentium 3.0 ghz processor，4 gb ram，and an 80 gb hard drive. a location appliance has been incorporated into the network and is being monitored by the cisco wcs. there are 3000 devices to be tracked but not all of them are being tracked on the cisco wcs. What can be done to correct the problem？（）

A. add a new location appliance.
B. add a new cisco wcs server dedicated to the location appliance.
C. add 4 gb of ram to the cisco wcs.
D. add a 120 gb hard drive to the cisco wcs.