You have installed SecurePlatform R60 as Security Gateway operating system. As company requirements changed, you need the VTI features of NGX. What should you do?

A.
In SmartDashboard click on the OS drop down menu and choose SecurePlatform Pro.
You have to reboot the Security Gateway in order for the change to take effect

B.
You have to re-install your Security Gateway with SecurePlatform Pro R60, as SecurePlatform R60 does not support VTIs

C.
Only IPSO 3.9 supports VTI feature, so you have to replace your Security Gateway with Nokia appliances

D.
Nothing, because SPLAT R60 does support VTIs

E.
Type "pro enable" on your Security Gateway and reboot it