Which of the following components are considered part of the Trusted Com-puting Base? 以下哪几部分组件被认为是可信计算基的一部分吗？（）

• A、trusted hardware, software and firmware 可信的硬件，软件和固件
• B、trusted hardware and software 可信的硬件和软件
• C、trusted computer operators and system managers 可信的操作员和系统管理员
• D、trusted hardware and firmware 可信的硬件和固件