【单项选择题】
You work as a Web Developer at Certkiller.com. You make use of Microsoft ASP.NET 3.5 tocreate a Web application. <br /> A page in the application holds the code that calls the Write and Warn methods of theTraceContext class. The code also adds an instance of EventLogTraceListener to the<br /> System.Diagnostics.Trace.Listeners collection. You need to ensure that the Write and WarnActualTests.commethods of the TraceContext class will write ASP.NET trace messages to the event logautomatically. You have to configure the Web application to accomplish this.<br /> What should you do？（）<img
A、A.A
B、B.B
C、C.C
D、D.D
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