1.1 How would you explain the need for systems analysis and design in an organization? (4)1.22. SDLC is one of the three approaches that an organisation can choose from when they are doing system analysis. How would you differentiate the three approaches (SDLC, Agile and Object-Oriented) and select the best that suits your organisation? (7)NB: Choose one and tell us why.1.3 How would you describe the following terms? (5)1.3.1 Critical Success Factors (CSFs)1.3.2 Enterprise resource planning (ERP)1.3.3 Joint Application Design (JAD)1.3.4 Work Breakdown Structure (WBS)1.3.5 Budget at Completion (BAC)1.4 What are the three goals of Work breakdown structure (WBS)?(3)