After installing WebSphere Commerce,the WebSphere Application Server fails to start.  Which log file will help determine if WebSphere Application Server was installed correctly?()
A、<WAS_installdir>\logs\log.txt
B、<WC_installdir>\logs\install_date_time.log
C、<WAS_installdir>\logs\<WC_instance_name>\SystemOut.log
D、<WC_installdir>\instances\<instance_name>\xml\<instance_name>.xml
E、<WAS_installdir>\logs\serverStatus.log