单选题A new HACMP maintenance level has recently been released. An administrator is creating a project plan that is required for applying the updates for a three-node production cluster. To minimize downtime，what is the best way to accomplish the updates on all cluster nodes？（）A Perform a graceful takeover one node at a time and apply the updates.B Perform the updates on all nodes simultaneously using C-SPOC utilities.C Perform the updates on node at a time with the cluster software active.D Perform a graceful stop of all cluster nodes and apply updates to all nodes.
单选题
A new HACMP maintenance level has recently been released. An administrator is creating a project plan that is required for applying the updates for a three-node production cluster. To minimize downtime，what is the best way to accomplish the updates on all cluster nodes？（）
A
Perform a graceful takeover one node at a time and apply the updates.
B
Perform the updates on all nodes simultaneously using C-SPOC utilities.
C
Perform the updates on node at a time with the cluster software active.
D
Perform a graceful stop of all cluster nodes and apply updates to all nodes.
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