NBB uses the time-based model to evaluate the security level of its Accounting Information System (AIS). The current security system components as following: Preventive control (P)-12 Seconds Detective control (D)-5 Seconds Corrective control (C)-8 Seconds NBB management believes that the security level of the AIS is low, and it must be increased, which require to spend $10,000. The improvement of the AIS security has 4 alternatives as following: Alternative I would increase P by 5 Seconds. Alternative 2 would decrease C by 4 Seconds. Alternative 3 would increase P by 3 Seconds and reduce C by 4 Seconds. Alternative 4, would increase P by 4 Seconds and reduce D by 2 Seconds. Answer the following questions: 1 Does the AIS of BBK currently secure? And why? 2 Show the Time-based model for Alternative I a Show the Time-based model for Alternative 2 4 Show the Time-based model for Alternative 3 5 Show the Time-based model for Alternative 4 Since each alternative has the same cost, which do you think would be the most cost-effective choice? And why