题目：
选择题
Which of the following description is WRONG about Wi-Fi? __________
- A. One can connect Wi-Fi devices in ad-hoc mode for client-to-client connections without a router.
- B. Communications between two devices need the involvement of an access point with WI-Fi.
- C. Any standard Wi-Fi device will work anywhere in the world with global operative set of standards.
- D. Now most laptops are built with wireless network adapters inside.
答案：
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