A WLAN was installed at a high AP density. DTPC is lowering the transmit power of many APs too low. Which change m the DTPC transmit power threshold must be made to allow APs to globally increase AP transmit power by 3dBm?

A WLAN was installed at a high AP density. DTPC is lowering the transmit power of many APs too low. Which change m the DTPC transmit power threshold must be made to allow APs to globally increase AP transmit power by 3dBm?
A . from 70 dBm to 73 dBm
B . from -70 dBm to -73 dBm
C . from 70 dBm to 67 dBm
D . from -70 dBm to -67 dBm

Answer: D