There is no other man in history than Thomas Jefferson who formulated the ideas of democracy with such fullness, persuasiveness and logic.

A．developed

B．expressed

C．established

D．put forward

有以下程序：
void main()
int i；
for(i=0;i＜3;i++)
switch(i)
case 1: printf("%d",i);
case 2:printf("%d",i);
default: printf("%d",i+1);


执行后输出的结果是( )。

A．111223
B．123
C．011023
D．122