In an on-network group call of an MCPTT group which is not a constituent MCPTT group of a temporary MCPTT group, which keys protect the media sent and received by MCPTT clients and users homed in the IWF?
SRTP-MK, SRTP-MS, and SRTP-MKI
GMK and GMK-ID
SPK and SPK-ID
PCK and PCK-ID
SRTP-MK and GMK