In the following example, which of these is the "exploit"?

In the following example, which of these is the “exploit”? Today, Microsoft Corporation released a security notice. It detailed how a person could bring down the Windows 2003 Server operating system, by sending malformed packets to it. They detailed how this malicious process had been automated using basic scripting. Even worse, the new automated method for bringing down the server has already been used to perform denial of service attacks on many large commercial websites. Select the best answer.

A.
Microsoft Corporation is the exploit.

B.
The security “hole” in the product is the exploit.

C.
Windows 2003 Server

D.
The exploit is the hacker that would use this vulnerability.

E.
The documented method of how to use the vulnerability to gain unprivileged access.