In a manufacturing facility with highly reflective materials, you are planning an upgrade to your existing 802.11b WLAN implementation. You have chosen a dualband 802.11n infrastructure product for this purpose. Your client applications include:
Handheld scanners — for inventory management
Toughbooks (laptops) — mounted on forklifts for inventory and workflow management
VoWiFi phones — used by select employees throughout the facility
You are evaluating all of the 802.11n enhancements and determining which features to enable for your environment and applications.
In this scenario, what 802.11n enhancement typically should NOT be enabled on the 2.4 GHz radio of the new APs?

A.
Multiple streams

B.
Short guard intervals

C.
Block Acknowledgments

D.
Frame aggregation