Which call setup signaling statement is true?

Refer to the exhibit. All IP phones are SCCP phones. Phone D makes an internal call to phone G. Which call setup signaling statement is true?

A.
Phone D signals phone G directly. Call setup is handled by the phones.

B.
Phone D signals gateway A, which processes the call and signals phone G.

C.
Phone D signals gateway B, which processes the call and signals phone G.

D.
Phone D signals gatekeeper. The gatekeeper processes the call and signals phone G.

E.
Phone D signals the call agent. The call agent processes the call and signals phone G.

Explanation:
This is a weird and wrong question. Maybe the phone they want to ask here is Phone A, B or C because only these phones can use SCCP to communicate with the Call Agent. Phones D and E cant use SCCP to talk with a H.323 Gateway.

Phone A, B or C are SCCP Phones so they hand over the call control intelligence to the Call Agent and the Call Agent need to process the call and signals phone G before these phones can talk with each other.