What should you do first?

You have an Azure Databricks workspace named workspace1 in the Standard pricing tier. Workspace1 contains an all-purpose cluster named cluster1.
You need to reduce the time it takes for cluster1 to start and scale up. The solution must minimize costs.
What should you do first?
A. Upgrade workspace1 to the Premium pricing tier.
B. Create a pool in workspace1.
C. Configure a global init script for workspace1.
D. Create a cluster policy in workspace1.