A. When some future scenarios are unknown.
B. When you need to look at the implications of not choosing certain
C. When the future scenarios are known.
D. When the outcomes of some of the actions are uncertain.
Answer Explanation : C - You would use a Decision Tree when uncertainty and unknowns exist regarding future scenarios and their outcomes; not when future scenarios are known.
My question is : If I don't know future scenarios - how can I calculate probability and impact. I can only calculate Net value if I know various future scenarios with probability and impact value.