【单选题】
You work as an application developer at Certkiller .com. You have been asked to profile a business application that can be accessible using the Event Log API. You have started by adding the following code to create a custom event log： <br /> if （EventLog.SourceExists （"Application1"）） <br /> EventLog.DeleteEventSource （"Application1"）； <br /> //Create new event log <br /> EventLog.CreateEventSource （"Application1"， "Profile"）； <br /> You need to write an event to the Application1 event log. What code must you use？（）<br /> <img src="https://nimg.ppkao.com/2018-07/chenxin/2018072616365730690.jpg?sign=b1c90de79349b519b2ebd57564ad410f&t=62d4890a" />
A、A
B、B
C、C
D、D
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