The First Step in Decision Tree Analysis Methodology Is to

The first step in decision tree analysis methodology is to

A) identify factors such as demand, price, and exchange rate, whose fluctuation will be considered over the next T periods.
B) identify the periodic discount rate k for each period.
C) start at period T, work back to Period 0 identifying the optimal decision and the expected cash flows at each step. Expected cash flows at each step in a given period should be discounted back when included in the previous period.
D) identify the duration of each period (month, quarter, etc.) and the number of periods T over which the decision is to be evaluated.
E) identify representations of uncertainty for each factor; that is, determine what distribution to use to model the uncertainty.