What Is the Relationship Between the Orbital Periods of the Four

What is the relationship between the orbital periods of the four Galilean satellites of Jupiter?

A) 1:2:4:8-Europa takes twice as long to orbit Jupiter as Io, Ganymede takes twice as long as Europa, and Callisto takes twice as long as Ganymede.
B) 1:2-Europa takes twice as long to orbit Jupiter as Io, but there is no simple integer relationship between Callisto, Ganymede, and Europa.
C) The periods appear to be random, with no simple relationship between them.
D) 1:2:4-Europa takes twice as long to orbit Jupiter as Io, and Ganymede takes twice as long as Europa, but there is no simple integer relationship between Callisto and Ganymede.