Which audio output to use?

General
1

i have a odroid n2 and i am not sure which audio output device i should use.
i have 3 different hdmi output options: hdmi pcm, hdmi multi ch pcm and only hdmi.
i have a marantz sr 7011 and use atmos, auro3d etc.

2

HDMI Multi ch PCM. Then enable passthrough for all relevant audio codecs below.

3

what is the difference between those 3?