Consider the following information:
A Form Template will edit an XML document that has a complex series of automated validation
and modifications applied to it.
The logic is to occur when the user clicks the Save button on the form and before the document
is saved to the repository.
The logic requires access to both the XML document and object attribute values.
According to EMC best practices, how can these business requirements be implemented?

A.
Implement a custom Item Validator and a custom Document Validator.

B.
Implement a custom Document Validator and a custom Document Processor.

C.
Use a StartWorkflowProcessor Document Processor to start a workflow to perform the logic.

D.
Implement a custom Document Processor to validate and modify the document.