The validation unit for the Orders form is set to Item. This master-detail form contains an Order block and a multirecord Order Items block.
Why might you want to create a When-Validate-Record trigger on the Orders block in this form?
A.
To check that all required items in the Orders block have values.
B.
To check that all required items in the Order Items block have values.
C.
To check that the shipping data for is not earlier than the order date.
D.
To perform some logic whenever a user navigates to a different record in the queried block.