You need to gather data from existing logs on critical events only

You configure a SharePoint 2013 farm.
You need to gather data from existing logs on critical events only.
What should you do?

A.
Run the following Windows PowerShell cmdlet:
Set-SPLogLevel -EventSeverity ErrorCritical
Get-SPLogLevel

B.
Run the following Windows PowerShell cmdlet:
Get-SPLogEvent | Out-GridView

C.
Run the following Windows PowerShell cmdlet:
Get-SPLogLevel -Identity “Cricial Issues”

D.
Use the SharePoint Health Analyzer feature.

Explanation:
Set-SPLogLevel -EventSeverity ErrorCritical: Specifies the category level to be set. The category level is any
one of the following values:
– None
– ErrorCritical
– Error
– Warning
– Information
– Verbose
The user can retrieve one or more categories from the Get-SPLogLevel cmdlet,
http://technet.microsoft.com/en-us/library/ff607887.aspx for setting the Loglevel and severitylevel, http://
technet.microsoft.com/en-us/library/ff607576.aspx for displaying the logs