Talal, an IT Administrator, Sets Up a KMS Server in His

Multiple Choice

Talal, an IT administrator, sets up a KMS server in his organization to enable KMS activation of Windows 10 licenses. The organization buys 20 new computers with generic volume license keys (GVLK) configured. Two days after the purchase, Talal tries to activate these 20 computers using the KMS server, but the licenses are not activated.
Which of the following is a reason for the activation failure?

A) A KMS activation is only possible after 180 days of the purchase.
B) A KMS server has a minimum activation threshold of 25 instances for Windows 10.
C) A KMS server cannot activate Windows 10 on computers with generic volume license keys.
D) A KMS is only possible when the client computers are connected to the Internet.