Which of the following is a true statement? Mandatory features screen out possible solutions; essential features are those that users could live without. Essential features screen out possible solutions; mandatory features are the important capabilities of a system that will serve as the primary basis for comparison of different design strategies. Desired features screen out possible solutions; mandatory features are the important capabilities of a system that will serve as the primary basis for comparison of different design strategies. Essential features screen out possible solutions; mandatory features are those that users could live without. Mandatory features screen out possible solutions; essential features are the important capabilities of a system that will serve as the primary basis for comparison of different design strategies.