[单选题]关于Windows XP的系统安全，下列说法中不正确的是（）。

A、应用必要安全策略，如安装杀毒软件和防火墙
B、从开始安装操作系统时就应该考虑安全问题
C、加强系统账户的安全管理
D、直接到微软网站上在线安装更加安全

参考答案： D

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