In What Important Way Does the Jupiter Satellite System Resemble

In what important way does the Jupiter satellite system resemble a miniature solar system, perhaps providing a hint to the initial formation of both systems?

A) The reflectivity of their surfaces decreases, the farther away they are from the central object, because the nearer objects have thicker clouds around them.
B) Average density of objects decreases as distance increases from the central object, because the heat from this object would have melted and evaporated the volatile low-density ices from the closer objects.
C) Average density of objects increases the farther away they are from the central object, because this central object can attract high-density material over a greater range of distances than for low-density material.
D) The masses of objects increase as distance increases from the central object, because the probability of accretion of small objects into larger objects increases with distance.