What are some of the purposes of the 4-Way Handshake? (Choose all that apply.)

What are some of the purposes of the 4-Way Handshake? (Choose all that apply.)
A . Transfer the GTK to the supplicant.
B . Derive a PTK from the PMK.
C . Transfer the GMK to the supplicant.
D . Confirm cipher suites.

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Answer: ABD