What is the best approach to achieve the goal?

Your network contains an Active Directory domain named contoso.com. The domain contains 200
servers that run either Windows Server 2012 R2, Windows Server 2012, or Windows Server 2008 R2.
The servers run the following enterprise applications:
Microsoft Exchange Server 2013
Microsoft SQL Server 2014
System Center 2012 R2 Operations Manager is deployed to the domain. Operations Manager
monitors all of the servers in the domain. Audit Collection Services (ACS) is installed.
You need to recommend a monitoring strategy for the domain that meets the following
requirements:
A group of administrators must be notified when an error is written to the System log on the servers
that run Exchange Server 2013.
A group of administrators must be notified when a specific event is written to The Application log on
the servers that run SQL Server 2014.
What is the best approach to achieve the goal? More than one answer choice may achieve the goal.
Select the BEST answer.

A.
From Operations Manager, enable audit collection.

B.
From Operations Manager, implement two monitors.

C.
From Computer Management, implement one event subscription.

D.
From Operations Manager, implement two rules.