What action should the vSphere administrator take to allow for a new vApp to be created in the clust

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What action should the vSphere administrator take to allow for a new vApp to be created in the cluster?

A.
Enable Distributed Resource Scheduling on the cluster

B.
Create a Resource Pool in the cluster, and create the vApp in the Resource Pool

C.
Enable High Availability on the cluster

D.
Create a new Datacenter, and create the vApp in the new Datacenter