How can you allow Rory Allen so that he can execute Bitlocker To Go?

You work as a desktop support technician at ABC.com. The ABC.com network consists of a single
Active Directory domain named ABC.com.
A ABC.com user named Rory Allen uses of a Microsoft Windows 7 Professional client computer
named ABC-WS680. During the course of the day Rory Allen attaches a USB hard drive to ABCWS680. and cannot enable BitLocker To Go on the USB hard drive.
How can you allow Rory Allen so that he can execute Bitlocker To Go?

A.
You should consider upgrading ABC-WS680 to Microsoft Windows 7 Ultimate.

B.
You should consider initiating the TPM hardware on ABC-WS680.

C.
You should consider downloading a Microsoft Encryption certificate for ABC-WS680.

D.
You should consider enabling IPSEC on ABC-WS680.

Explanation:
BitLocker To Go is a feature ONLY available on Windows 7 Ultimate and Windows 7
Enterprise.