On a decision tree, once the tree has been drawn and the payoffs and probabilities have been placed on the tree, the analysis $($computing the Expected Value $($EV$)$ and selecting the best alternative$)$ is done by

Starting at the top of the tree and moving down.

Starting at the bottom of the tree and moving up$.$

None of the above

Working backward in time from right to left.

Working forward from left to right.