You are the IT professional who work in an International company named Wiikigo. You are experienced in troubleshooting operating systems and applications that are not working correctly, identifying code defects and so on. You have enough knowledge on windows internals and you provide technical support for the company. According to the company requirement, you develop a device driver. This device driver is used on computers that run Windows Server 2008. You have to find out the drivers routines that use more than 50 percent of the computers CPU. Which of the following tools should be used?

A.
You should choose to usePrefast.exe

B.
You should choose to useTaskmgr.exe

C.
You should choose to use Perfmon.msc

D.
You should choose to use Kernrate.exe