✔ 最佳答案
C. All of the above.
Depends how old you look, I went in and bought Halo 3 when it came out and they didn't ask me for ID, I was 18 at the time but apparently I look older. My friend was with me and he didn't have his ID, he tried buying the game 5 minutes later and they asked him for ID; he didn't have it so they didn't sell it to him. They are REQUIRED to ask you however, most of the time it doesn't happen unless you look in the "underage" zone.
(Think of it in the same sense of when people buy alcohol, some people get asked, some don't)