How do you trigger a business rule to populate the Standard Hours field from Legal Entity records in the Add New Employee wizard?

How do you trigger a business rule to populate the Standard Hours field from Legal Entity records in the Add New Employee wizard?
A . Event Type: onInit; Base Object: Standard Hours
B . Event Type: onChange; Base Object: Employee Information
C . Event Type: onEdit; Base Object: Employee Information
D . Event Type: onSave: Base Object: Legal Entity

Answer: A