新建一个流对象，下面哪个选项的代码是错误的？（ ）A.new BufferedWriter(new FileWriter('txt'));B.new BufferedReader(new FileInputStream('A.dat'));C.new GZIPOutputStream(new FileOutputStream('A.zip'));D.new ObjectInputStream(new FileInputStream('A.dat'));。答案是：B.new BufferedReader(new FileInputStream('A．dat'));