preguntas sobre placas (ayuda)

Why is it important to have all digital devices synced to the same clock?
a>So the Twinkie and Ho-Ho can coexist.
b>To avoid jitter and digital clipping associated with multiple clocks.
c>To increase jitter and therefore increase the dynamic range of the recording.
d>To increase jitter and therefore eliminate digital clipping associated with multiple clocks.
e>None of the above.

What following setup is viable (assuming there are no other devices present in setup)?
a>M-Audio CO2 S/PDIF Out  FireWire 410 (external MIDI sync) S/PDIF In.
b>M-Audio Octane ADAT Out  FireWire 1814 (external S/PDIF sync) ADAT In.
c>M-Audio Octane ADAT Out  FireWire 1814 (external ADAT sync) ADAT in.
d>M-Audio CO2 S/PDIF Out  FireWire Solo (internal sync) S/PDIF In.
e>None of the above.
gracias