Medical center needs to develop a new database system for tracking medical treatments given to a specific patient. So the center asks students who take MIS 215 to develop a database that meets their requirements. Since the treatments information of medical center are sensitive and directly related to patients' health, risk minimization should be a top priority. So medical center puts the "free of error as most important factor in measuring the performance of a database. In addition, the center has a limited budget for database development about SAR 50,000. Given the scenario, discuss which of the following four implement strategies would be best. (1) Parallel implementation (2) Plunge implementation Old System Old System New System New System Parallel Running A low risk but high cost method of replacing an old system with a new one. Direct Changeover A low cost but high risk method of replacing an old system with a new one. (3) Pilot implementation (4) Phased implementation Old System Old System New System Pilot New System Pilot Running A medium risk but lengthy method of replacing an old system with a new one. Phased Implementation A medium risk but lengthy method of replacing an old system with a new one