49. What are the best strategies for determining system requirements? a) analyze existing systems, ask users what they need, prototyping, and monitoring b) ask users what they need, analyze existing systems, develop concept of new system, and prototyping c) ask users what they need, analyze existing systems, examine existing system utilization, and prototyping (1) ask users what they need, analyze existing systems, examine existing system utilization, and develop concept of new system