What is the Splunk PS recommendation when using the deployment server and building deployment apps?

What is the Splunk PS recommendation when using the deployment server and building deployment apps?

A. Carefully design smaller apps with specific configuration that can be reused.

B. Only deploy Splunk PS base configurations via the deployment server.

C. Use $SPLUNK_HOME/etc/system/local configurations on forwarders and only deploy TAs via the deployment server.
D. Carefully design bigger apps containing multiple configs.

Reference: https://www.splunk.com/en_us/blog/platform/adding-a-deployment-server-forwarder-management-to-a-new-or-existing-splunk-cloud-or-splunk-enterprise-deployment.html