What should you include in the application code?

You are developing an application that uses a .config file.
The relevant portion of the .config file is shown as follows:

You need to ensure that diagnostic data for the application writes to the event log by using the configuration
specified in the .config file.
What should you include in the application code?

A.
Option A

B.
Option B

C.
Option C

D.
Option D

Explanation:
http://msdn.microsoft.com/en-us/library/vstudio/system.diagnostics.eventlogtracelistener
Public static void Main(string[] args) {
Create a trace listener for the event log.
EventLogTraceListener myTraceListener = new EventLogTraceListener(“myEventLogSource”);
Add the event log trace listener to the collection.
Trace.Listeners.Add(myTraceListener);
// Write output to the event log.
Trace.WriteLine(“Test output”);
}