下列Lingo中不能正常运行的是
A、Model:
min=5*x1+3*x2;
x1+x2>=100
4*x1+x2<=300;
end
B、Title:傻瓜程序;
min=5*x1+3*x2;
x1+x2>100;
2*x1+x2<300;
C、Model:
min=5*x1+3*x2;
x1+x2>=100;
4*x1+x2<=300;
D、!傻瓜程序;
[opt]min=5*x1+3*x2;
[st1]x1+x2>100;
[st2]2*x1+x2<300;