Question $6(12$ marks$)$a$)$ Describe two factors that contribute to successful systems development projects? $(2$ marks$)$b$)$ Describe at least two ways that a project may still fail despite the many project management techniques and controls available to support success. $(2$ marks$)$c$)$ Using the LEGO case facts, explain three methods for developing information systems that LEGO could have used? List one advantage and one disadvantage for each method. If you cannot remember the LEGO case details, answer the question using general system design approaches. $(6$ marks$)$d$)$ Discuss the critical factors an organization should consider from an accounting perspective during a post$-$system review? $(2$ marks$)$