In the Cisco Unified Contact Center Enterprise solution with SIP Dialer, which option lists the correct order to setup the components (assuming the agent peripheral gateway host already exists)?

In the Cisco Unified Contact Center Enterprise solution with SIP Dialer, which option lists the correct order to setup the components (assuming the agent peripheral gateway host already exists)?
A . configure media routing peripheral gateway, dialer; install media routing peripheral gateway, dialer
B . configure dialer, port map, media routing peripheral gateway; install dialer, media routing peripheral gateway
C . install dialer, media routing peripheral gateway; configure dialer, port map, media routing peripheral gateway
D . install media routing peripheral gateway, dialer; configure media routing peripheral gateway, dialer

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Answer: B