You need to monitor long-running SQL Server Agent jobs

You use System Center 2012 R2 Operations Manager tomonitor the datacenter infrastructure and applications
for an organization. You import the SQL Server Management Pack.
You are unable to monitor long-running SQL Server Agent jobs. You observe that the SQL Server Agent Jobs
View displays zero instances Other SQL Server-related monitoring operations function as expected.
You need to monitor long-running SQL Server Agent jobs.
What should you do?

A.
Enable the Job Duration unit monitor.

B.
Enable agent proxy for SQL Servers.

C.
Enable the object discovery for the SQL Server Agent Job class.

D.
End maintenance mode for the SQL Server 2012 Computers group.