Which option fulfills these requirements?

You need to configure wireless access for several classes of loT devices, some of which operate only with 802 11b. Each class must have a unique PSK and will require a different security policy applied as a role There will be 15-20 different classes of devices and performance should be optimized

Which option fulfills these requirements?
A . Single SSID with MPSK for each loT class using 5 GHz and 6 GHz bands
B. Single SSID with MPSK for each loT class using 2.4GHz and 5 GHz bands
C. Individual SSIDs with unique PSK for each loT class, using 5GHz and 6 GHz bands
D. Individual SSIDs with unique PSK for each loT class, using 2.4GHZ and 5GHz band

Answer: B