I think it is Z .I hope I helped.
Rock layers along the fault move first, but it starts from the inner core, to the outer core, to the mantle, and then the crust i believe
hope this helps
Dwarf planets aren't considered planets because of the fact that they are NOT big enough in size to be a major planet, Pluto just so happens to be one of them.
Hope this helps :)
You should ease that crush into a conversation where you can tell them