multithreading - スレッドは所属するプロセスを変更できますか?

Question

実はマイクロソフトの面接の質問ですが、

About the Thread and Process in Windows, which description(s) is(are) correct:(3 Points)
   A. One application in OS must have one Process, but not a necessary to have one Thread
   B. The Process could have its own Stack but the thread only could share the Stack of its parent Process
   C. Thread must belongs to a Process
   D. Thread could change its belonging Process

検索しましたが、まだ答えが得られません。