Which two approaches optimize test maintenance and support future declarative configuration changes?
Choose 2 answers.

Universal Containers requires Service Representatives to update all Cases at least one every three days. To make sure of this policy is obeyed, a developer has been asked to implement a field that displays the number of days since the last Case update. What should the developer use to configure the solution?

A developer has a single custom controller class that works with a Visualforce Wizard to support creating and editing multiple sObjects. The wizard accepts data from user inputs across multiple Visualforce pages and from a parameter on the initial URLWhich statement is unnecessary inside the unit test for the custom controller?

Which set of roll-up types are available when creating a roll-up summary field?

A developer needs to apply the look and feel of lightning experience to a number of applications built using a custom third-party javascript framework and rendered in visualforce pages which option achieves this?