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. There is a computer named C02 in the company.

Windows Vista has been installed on C02. You start C02 and have a hardware device attached to the computer. Since you are the technical support, the company assigns a task to you. The company wants you to debug the creation of the functional device object (FDO) for the hardware device. Which routine should you debug?

A.
You should debug StartIo()

B.
You should debug AddDevice()

C.
You should debug DriverEntry()

D.
You should debug DriverUnload()