Which best practice should be done before releasing the dashboard?

An Einstein consultant created a dashboard that went through review. Some few charts were added and removedin the process. The dashboard is now approved for production.

Which best practice should be done before releasing the dashboard?
A . Modify the XMD so all labels and values are user-friendly.
B. Rename all the steps to correspond with the defined naming convention.
C. Remove the redundant steps to ensure dashboard performance.
D. Apply conditional formatting on the new charts.

Answer: C

Explanation:

https://help.salesforce.com/articleView?id=bi_dashboards_inspector.htm&type=5