Which circumstance will prevent a system administrator from deleting a custom field?
A. The field is used in a workflow field update.
B. The field is used in a report.
C. The field is used in a page layout.
D. The field is part of a field dependency.
Discussion: You can not reference a field that belongs in a workflow and try to delete it. The custom salesforce programming features won't allow that and will block the deletion.