Which functionality is available to firewall users with an active Threat Prevention subscription, but no WildFire license?

Which functionality is available to firewall users with an active Threat Prevention subscription, but no WildFire license?
A . WildFire hybrid deployment
B . 5 minute WildFire updates to threat signatures
C . Access to the WildFire API
D . PE file upload to WildFire

Answer: B