A Team Complains That Many of Their Issues Are in the Closed

A team complains that many of their issues are in the Closed status, but do not have a resolution set, which causes problems with reporting. The project uses a single workflow. You want to set the resolution to Done on all existing issues in the Closed status. Which combination of workflow elements and a bulk operation will achieve this?

A) A temporary transition and a trigger An Edit Issues bulk operation
B) A temporary transition and a post function A Transition Issues bulk operation
C) A screen and the Resolution field A Move Issues bulk operation
D) A screen and a custom field
E) A temporary transition and a screen