You need to meet the requirements for the purchase order creation form.
What are two possible ways to achieve this goal? Each correct answer presents a complete solution.
NOTE: each correct selection is worth one point.
A. Create a class and add a form data source event handler method to the class.
B. In Application Explorer, create a table extension and implement validation.
C. In Application Explorer, create a form extension and implement validation.
D. Implement Chain of Command (CoC) and method wrapping by creating a form extension class.
