NF a Wants to Explicitly Subscribe for Event Notifications at NF

NF A wants to explicitly subscribe for event notifications at NF B. Which of the following actions regarding this mechanism is FALSE?

A) NF A acts as a service consumer and NF B acts as a service producer.
B) NF A includes a subscription identifier in the request message sent to NF B.
C) NF A includes a callback URI in the request message sent to NF B.
D) NF A includes event filtering criteria in the request message sent to NF B.