Which use case describes the function of the Estimator tool?

A tester needs to know how many versions of an application they test for MPL2.

A business architect needs to know when to prioritize a specific customer Microjourney for development.

A product owner needs to know how many user stories to create in Agile Workbench for MLP 1.

A stakeholder needs to know how much time and effort is needed to build MLP2.