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.