单项选择题

有如下一段程序:
SET TALK OFF
AY="Hello World!"
BY="X"
CY=ASC(BY)+1
DY=30
EY=CHR(DY*2+5)+CHR(CY)
EY=&EY
"&EY."
SET TALK ON
REimages/tu/RN
执行该程序后,屏幕显示的结果为______。

A.AY
B.BY
C.Hello world!
D.程序出错