The FusionInsight HD cluster planned by a bank has 90 nodes. If the control node is planned with 3 nodes, how many data nodes in the cluster are mostly recommended to be planning?

The FusionInsight HD cluster planned by a bank has 90 nodes. If the control node is planned with 3 nodes, how many data nodes in the cluster are mostly recommended to be planning?
A . 87
B . 85
C . 90
D . 86

Answer: A

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