Imagine you are hired as a private detective to track down a suspect in a murder investigation. At the scene of the crime, eyeglasses were recovered and after studying them you determine they are converging lenses that belong to the murderer. You find it perfectly within the law to knock on a suspect's door and speak to him. When the suspect answers the door you chat casually with them on his porch and eventually ask him to identify a small object held in your hand. He squints his eyes hard and tries to lean back and he guesses it is a Skittle when in fact it is an M. What can be concluded from the suspect's behavior?
1) The suspect has poor eyesight
2) The suspect is nervous
3) The suspect is lying
4) The suspect is unfamiliar with the object