表达好奇与提问的句型 — 英语选择题

在观星活动中，Amy 想表达自己很好奇月球离地球有多远。哪句话表达正确？A. I wonder how far is the Moon from Earth. B. I wonder how far the Moon is from Earth. C. I wonder how far does the Moon from Earth. D. I wonder how far the Moon from Earth does.