Which of the following channels, when used in close proximity to one another, provide the BEST protection against crosstalk?

Which of the following channels, when used in close proximity to one another, provide the BEST
protection against crosstalk?

A.
1 and 11

B.
2 and 10

C.
6 and 1

D.
6 and 11

Explanation:

http://www.dci.ca/?Section=Products&SubSection=WiFi-FAQ