In a JavaFX FXML app, you define the app’s event handlers in a________ class, which defines instance variables for interacting with controls programmatically, as well as event-handling methods.

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A struct is used for a Node instead of a class because:

A. overloaded operators must always be used for the data members of a node B. we like to access the data members of the Node directly, and in a class, we should not do that C. a pointer cannot point to an object of a class, so there would be no way to link the nodes D. class objects cannot be created in heap memory