You work as a senior administrator at ABC.com. The ABC.com network consists of a single domain named ABC.com. All servers on the ABC.com network have Windows Server 2012 R2 installed， and all workstations have Windows 8 installed. You are running a training exercise for junior administrators.You are currently discussing a Windows PowerShell cmdlet that activates previously de-activated firewall rules.  Which of the following is the cmdlet being discussed？（）

• A、Set-NetFirewallRule
• B、Enable-NetFirewallRule
• C、Set-NetIPsecRule
• D、Enable-NetIPsecRule