void waitForSignal（） {  Object obj = new Object（）；  synchronized （Thread.currentThread（）） {  obj.wait（）；  obj.notify（）；  }  }  Which is true？（） 

A.  This code may throw an InterruptedException.

B.  This code may throw an IllegalStateException.

C.  This code may throw a TimeoutException after ten minutes.

D.  This code will not compile unless “obj.wait（）” is replaced with “（（Thread） obj）.wait（）”.

E.  Reversing the order of obj.wait（） and obj.notify（） may cause this method to complete normally.

F.  A call to notify（） or notifyAll（） from another thread may cause this method to complete normally.