An engineer is designing a new wireless network. The network needs to meet these requirements:
- support a high wireless client concentration
- support data over wireless
- support voice over wireless
- avoid interferenceWhich design approach should be taken?

A. 5 GHz frequency band with channel bonding, to support 40 MHz channels B. 5 GHz frequency band without channel bonding, to support 20 MHz channels C. 2.4 GHz frequency band without channel bonding, to support 20 MHz channels D. 5 GHz frequency band with channel bonding, to support 80 MHz channels