l'hree pople amd Alex, Blair, and Casy ere question about the thfi of a rare manuscript. One of them committed the theft, one was an accomplice, and the other was innocent. Each of these statements was made by one of the three people: (1) Alex is not the accomplice. (2) Blair is not the thief (3) Casey is not innocent. The following facts are known about statements 1-3: (I) Each statement refers to a person other than the speaker (II) The innocent person made at least one of the three statements (III) Statements made by the innocent person are true. (IV) Statements made by the thief and statements made by the accomplice are false. Determine the role of each person in the theft. Justify your