12. You have been assigned to work on user interface (UI) design for a mobile app. Your design will consider users' needs and apply principles of human-computer interaction to build a user-centered interface. The criteria you will need to consider in your UI design for the mobile app as listed below: Ensure that help is always available on demand. Help screens should provide information about menu choices, procedures, shortcuts, and errors. Include contact information, such as a telephone extension or email address, if a department or help desk is responsible for assisting users. Require user confirmation before data deletion (Are you sure?) and provide a method of recovering data that is deleted inadvertently. Built in safeguards that prevent critical data from being changed or erased. Let the user know whether the task or operation was successful or not. For example, use messages such as 'Update completed', 'All transactions have been posted', or' The ID Number' was not found. Provide an "Undo" key or a menu choice that allows the user to undo the results of the most recent command or action. 19 Based on the criteria given above, what is the BEST user interface guideline that can be applied? A. Create an Attractive Layout and Design B. Provide Users with Help and Feedback C. Enhance User Productivity D. Focus on Data Entry Screens