You create a custom entity. Records are created by users through the user interface, and through a backend integration.

You must combine

two fields to populate a new field that will replace the name field on the entity.

You need to ensure that the new field displays a result immediately after a new record is saved.

What should you use?

A. a background workflow

B. JavaScript code on the

record form

C. a form-scoped business rule

D. a calculated field