Which setup should the Admin use?

An Admin wants to update a field on all Quote Lines based on a Quote field.

Which setup should the Admin use?
A . A Workflow Rule, with conditions that check the Quote field values, and a Field Update to Update the Quote Lines.
B . Process Builder, with conditions that check the Quote field values, and the native functionality to update related records.
C . A Custom Trigger on the Quote object, with a query to obtain all related Quote Lines, and an update operation after changing the field.
D . A Price Rule, with conditions that check the Quote field values, and an action to update the Quote Lines.

Answer: D