There are different star systems. Binary star systems consist of two stars. Multiple star systems consist of two or more stars. The meaning of star system is "A small number of stars."
I think it's either A) a group of hundreds of stars, or B) a group of two or more stars. I would assume it's B), but i could be wrong.
Hope this helps!
Liver cell will divide slowly if the part of the liver remove cells, liver cells continues until to divide until the liver reaches its former size
It is B, because that is how they produce their scientific name