Universal Containers has built a recruiting application with two custom objects, Job Applications
and Reviews that have a master-detail relationship. Users should NOT be allowed to delete review
records after job application records have been approved.
How would a developer meet this requirement?

A.
Change the interviewer’s profile to Read-only for the review object

B.
Use workflow to change the page layout to Read-only

C.
Remove the Delete button from the job application page layout

D.
Use a validation rule in conjunction with a roll-up summary field