以下Java程序代码中,能创建BufferedReader对象的是()
A.BufferedReader in=new BufferedReader(new FileReader("a.dat")); B.BufferedReader in=new BufferedReader(new Reader"a.dat")); C.BufferedReader in=new BufferedReader(new FileInputStream("a.dat")); D.BufferedReader in=new BufferedReader(new InputStream("a.dat"));正确答案A