A technology company plans to develop a prototype laptop that uses iris scanners that can distinguish one user from another. The inventor of this laptop claims that it will reduce insurance and security costs at offices, as only authorized users will be able to turn on the laptop, making it a less appealing target for thieves. Which of the following, if true, most supports the company's implementing its plan to develop the prototype? ['Colored contacts allow people to change their eye color, without altering any of the other characteristics of their iris.', 'Insurance and security companies provide other services to companies in addition to protecting laptops.', "There is considerable variation in the color and patterns present in most people's irises.", 'In-person security services will not suffer from technological glitches when allowing access to laptops.']