Is The 70-515 MCTS Training Kit Wrong on a ASP.NET Health Monitoring question?

In my book, "MCTS SElf-Paced Training Kit (Exam 70-515): Web Applications Development with Microsoft .NET Framework 4", on page 418 there is the following question:

You want to configure ASP.NET health monitoring to log information every time a user fails to log on to the server. Which web event class should you use?

• A. WebRequestEvent
• B. WebAuditEvent
• C. WebApplicationLifetimeEvent
• D. WebAuthenticationSuccessAuditEvent

The answer, according to the book is D. However, according to the book, WebAuthenticationSuccessAuditEvent is

"Used to provide information when a successful user authentication occurs on the site"

. I'm thinking that maybe the book meant to say 开发者_StackOverflow中文版that the WebAuthenticationFailureAuditEvent class should be used, which is

"Used to provide information when a failed attempt at user authentication occurs on the site.

Am I correct in believing that the book is wrong?

Yes, you are correct. The book is wrong.