What should you do first?

You need to prepare for the deployment of the Phoenix office computers.

What should you do first?
A . Generalize the computers and configure the Mobility (MDM and MAM) settings from the Azure Active Directory admin center.
B. Extract the hardware ID information of each computer to a CSV file and upload the file from the Microsoft Intune blade in the Azure portal.
C. Extract the hardware ID information of each computer to an XML file and upload the file from the Devices settings in Microsoft Store for Business.
D. Extract the serial number information of each computer to a CSV file and upload the file from the Microsoft Intune blade in the Azure portal.

Answer: A

Explanation:

Reference: https://docs.microsoft.com/en-us/windows/deployment/windows-autopilot/existing-devices