设有如下代码：class Base{}public class MyCast extends Base{static boolean b1=false;stat

设有如下代码：

class Base{}

public class MyCast extends Base{

static boolean b1=false;

static int i = -1;

static double d = 10.1;

public static void main(String argv[]){

MyCast m = new MyCast();

Base b = new Base();

//Here

}

}

则在 //Here处插入哪个代码将不出现编译和运行错误。

A.b=m;

B.m=b;

C.d =i;

D.b1 =i;