Final answer:
If an Array control attribute is not added to the layout of a configurator, usually the entire Array set will be hidden, as the configurator would not have instructions on how to display the Array. Control attributes are crucial for the correct display and behavior of UI elements within configurators.
Thus, the correct option is C.
Step-by-step explanation:
If an Array control attribute is not added to the layout of a configurator, it typically results in the entire Array set being hidden. Without the Array control attribute, the configurator does not have a reference point to understand how to display the Array to the end user. Configurators require specific attributes to control the visibility and the behavior of the elements such as arrays within them. Therefore, if the control attributes are not properly defined, the functionality linked to those elements cannot be rendered as intended.
It's important to note that outcomes can vary depending on the specific configurator software being used, but generally, control attributes are essential for ensuring that arrays and similar UI elements behave according to the design of the configuration rules. Hence, the configuration rules themselves may not fail to fire, but the user interface would likely not display the Array set correctly, affecting the user's ability to interact with the configurator.
Therefore, the correct option is C. The system will automatically assign an Array control attribute.