HOTSPOT - A company manufactures high-end speaker systems. You have different configurations available for customers to customize features including finishes and speaker materials. You have a product configuration model with bill of material lines and conditions for each component. A customer can optionally add on protective covers, but only if a non-metal material is selected. If any other material is selected, the covers cannot be added. You add the following attributes: 

You need to create an expression-based constraint that will only allow Corner Protection if Metal is not selected. How should you complete the expression? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point. Hot Area: