You need to schedule a video conference between participants in Melbourne, Hong Kong, and San Francisco. What is the most appropriate time window?
a) 3:00 AM - 7:00 AM (Melbourne time)
b) 6:00 PM - 10:00 PM (Hong Kong time)
c) 8:00 AM - 12:00 PM (San Francisco time)
d) 1:00 PM - 5:00 PM (Melbourne time)