Which three operations should be done in a controller?

In Salesforce B2C Commerce, controllers are responsible for handling application logic and responding to user requests. The operations best suited to be done in a controller include: A. Generate the response as JSON or HTML - Controllers handle the final rendering of data in the desired format for the client, whether as web pages (HTML) or data endpoints (JSON). B. Use the Script API to generate data for the view - Controllers often leverage server-side Script APIs to fetch or manipulate data necessary for the view. E. Use the model needed for the view - It is a common practice to construct models that encapsulate data and business logic which are then passed to the view for rendering, keeping views clean and focused solely on presentation.