When designing a wireless network, which would be a compelling reason to use 5 GHz?

A. 5 GHz can go further.
B. 5 GHz allows for more clients.
C. There are 24 non-overlapping channels.
D. There is less interference on 5 GHz.

C. The 5 GHz band for 802.11 a/n/ac has 24 non-overlapping channels. The 2.4 GHz band for 802.11 b/g/n has only 3 non-overlapping channels. If the clients are compatible with 802.11 a/n/ac, it is desirable to use 5 GHz.