Which dBm range is the network inspected against?

A wireless engineer is utilizing the voice readiness tool in Cisco Prime for a customer that wants to deploy Cisco IP phones .

Which dBm range is the network inspected against?
A . -78 to -65 dBm
B . -72 to -67 dBm
C . -85 to -65 dBm
D . -85 to -67 dBm

Answer: D

Explanation:

https://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/34/user/guide/bk_CiscoPrimeInfrastructure_3_4_0_UserGuide/bk_CiscoPrimeInfrastructure_3_4_0_UserGuide_ chapter_01010.html

minimum is -90 and maximum is -67 for IP phone