You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. You create a SQL Server Agent job that execute every 2 minutes. There istext file named SQL.log On the E://drive. The job logs information to the text file. You get a report from users saying that the server doesn'；t make response. You check and find that the SQL Server Agent service does not run and the Agent job doesn'；t function any loner. As the IT support， you have to identify the reason for the failure of the SQL Server Agent service.  Which log should you check？ （）

• A、You should check ERRORLOG
• B、You should check QL1.log
• C、You should check SQLAGENT.OUT
• D、You should check log_xx.trc