What is the recommended minimum speed at the edge of the cells in an 802.11g network for a good Cisco VoWLAN deployment?

What is the recommended minimum speed at the edge of the cells in an 802.11g network for a
good Cisco VoWLAN deployment?

A.
11 Mb/s

B.
12 Mb/s

C.
18 Mb/s

D.
36 Mb/s

E.
54 Mb/s

Explanation: