Which pre-installation step was omitted and therefore caused this problem?

A customer calls Avaya support after their telecom administrator was unable to add 50 new telephones for new hires. Avaya support determines that the number of telephone exceeds the capacity that the system supports.

Which pre-installation step was omitted and therefore caused this problem?
A . Accessing support.avaya.com to verify customer systems compatibility
B . Providing accurate licensing specifications
C . Checking the required number of SIP trunks
D . Verifying the version installed is compatible with existing versions

Answer: B