An organization has deployed a View environment. Users need to connect USB devices to their View sessions.
All client endpoints are Windows 7 thin clients.
A firewall is in place through which all network traffic flows.
All Windows patches are up to date on guest virtual machines and endpoints.
Users report that USB devices are not connecting to the View sessions when they are plugged in to the thin clients.
What are two reasons that could cause this behavior? (Choose two.)

A.
TCP port 9427 is closed on the firewall.

B.
TCP port 32111 is closed on the firewall.

C.
Windows Mobile Device Center is preventing USB redirection.

D.
USB redirection drivers on the guest virtual machine are missing or disabled.