$"$T$$o m$$t ch$$ng tr$$nh b$$ng C# y$$u c$$u ng$$i d$$ng $$t h$$ng$.$ Bao g$$m to$$n b$$ menu b$$n d$$i v$$ chuy$$n th$$I need the answer as soon as possible. A correct answer will receive a like. Strict warning: AI responses are unacceptable. AQ$13$

A $$ Burger McDo

B $$ Cheese Burger

C $-$ Quarter Pounder with Cheese

L$$u $$:

$-$KH$$NG C$$N GUI.

$-$N$$u ng$$i d$$ng kh$$ng nh$$p $$n h$$ng v$$i m$$c menu t$$ng $$ng$,$ giao d$$ch s$$ k$$t th$$c$.$

$-$Sau khi ch$$n th$$nh c$$ng m$$t $$n h$$ng$,$ h$$y y$$u c$$u s$$ l$$ng v$$ s$$c nh$$n v$$i gi$.$

$-$y l$$ m$$t m$$c duy nh$$t cho m$$i giao d$$ch$.$

$-$Kh$$ng thay $$i $$n h$$ng$.$

$-$Kh$$ng th$$m m$$c$.$

$-$Sau khi t$$ng s$$c hi$$n th$,$ ng$$i d$$ng s$$c y$$u c$$u nh$$p s$$ ti$$n m$$ h$$ s$$ thanh to$$n$.$

$-$N$$u s$$ ti$$n $$ thanh to$$n l$$n h$$n ho$$c b$$ng t$$ng s$$ ti$$n$,$ ch$$ng tr$$nh s$$ hi$$n th$$ thay $$i$.$ N$$u kh$$ng$,$ ch$$ng tr$$nh s$$ th$$ng b$$o $$n h$$ng b$$ h$$y do thanh to$$n kh$$ng $."$