Which wireless LAN design ensures that a mobile wireless client will not lose connectivity when moving from one access point to another?

Which wireless LAN design ensures that a mobile wireless client will not lose connectivity when moving from one access point to another?

A.
a utilizing MAC address filtering to allow the client MAC address to authenticate with the surrounding APs.

B.
using adapters and access points manufactured by the same company

C.
overlapping the wireless cell coverage by at least 10%

D.
configuring all access points to use the same channel

Explanation:
To ensure that wireless users will not lose connectivity when moving from the initial access point to a new access point, we have to ensure that the two access point has at least 10 percent coverage.