Where can you associate the custom object with the onboarding process?

Where can you associate the custom object with the onboarding process?
A . Go to Admin=>Configure ObjectDefinition
B . Go to Admin=>ConfigureBusinessRules->Archive Rule ONB2_CustomDataCollectionCheck
C . Go to Provisioning=> EC Extensions using MDF-> select a number of custom MDF Objects
D . Go to Admin=>Manage Permission roles->Metadata Framework

Answer: A