What are two approaches the architect should use to achieve this solution?

An architect has been asked to provide error messages when a future date is detected in a custom Birthdate _c field on the Contact object. The client wants the ability to translate the error messages.

What are two approaches the architect should use to achieve this solution? Choose 2 answers
A . Implement a third -party validation process with translate functionality.
B . Create a trigger on Contact and add an error to the record with a custom label.
C . Create a workflow field update to set the standard ErrorMessage field.
D . Create a validation rule and translate the error message with translation workbench.

Answer: B,D