Which PowerShell command can be used to display all the Citrix services installed on the Delivery Controller?

Which PowerShell command can be used to display all the Citrix services installed on the Delivery Controller?
A . Get-Service -DisplayName *broker*
B . Get-Service -DisplayName *citrix*
C . Get-Service -DisplayName *controller*
D . Get-Service -DisplayName *xendesktop*

Answer: B