在窗体中使有一个文本框（名为n）接受输入的值，有一个命令按钮run，事件 代码 如下：&nBsp; privAtE suB run_CliCk()&nBsp; rEsult=""&nBsp;&nBsp; For i=1 to mE!n&nBsp; For j=1 to mE!n&nBsp; rEsult=rEsult+"*"&nBsp; nExt j&nBsp;&nBsp; rEsult=rEsult+Chr(13)+Chr(10)&nBsp; nExt i&nBsp;&nBsp; msgBox rEsult&nBsp; EnD suB&nBsp;&nBsp; 打开窗体后，如果通过文本框输入的值为4，单击命令按钮后输出的图型是&nBsp;
A. **** B. *&nBsp;
**** ***&nBsp;
**** *****&nBsp;
**** *******&nBsp;&nBsp;
C. **** D. ****&nBsp;
****** ****&nBsp;
******** ****&nBsp;
********** ****&nBsp;