（6-10）有如下代码，请为指定位置选择正确代码。（ ）class Outer{ class Inner{ void show() { System.out.println("inner"); } } public void aOuterMethod() { // ① } public static void main(String[] args) { Outer out=new Outer(); // ② Outer.Inner inn=out.new Inner(); // inn.show(); }}
选项：

A:① new Inner();
B:② Inner inn=new out.Inner();
C:② Inner = new Inner()
D:② Inner inn=out.new Inner();
E:② Outer.Inner inn=out.new Inner();
F:① this.show();