Which of the Following Are the Factors for David B

Multiple Choice

Which of the following are the factors for David B.Gleicher's model?

A) dissatisfaction with the current situation,vision of what the future can become,and probabilities of achieving the vision
B) dissatisfaction with the past situation,vision of what the present can become,and practical first steps to achieve the vision
C) dissatisfaction with the planned future,vision of what tomorrow can be like,and probable pitfalls in trying to change
D) none of the above