单选题An administrator is looking to apply a new service pack for an OS on several systems that run business critical applications for a large international finance corporation. Which of the following should the administrator do FIRST？（）ADeploy the service
题目
单选题
An administrator is looking to apply a new service pack for an OS on several systems that run business critical applications for a large international finance corporation. Which of the following should the administrator do FIRST？（）
A
Deploy the service pack to a single department within the corporation.
B
Upgrade the system with requirements for that service pack.
C
Deploy the service pack to a non-critical application server.
D
Submit a change control for the service pack deployment.