Need Answer ASAP Step by Step Process (5Q)

The decision tree branch shown below lists projected cash flows with the corresponding probabilities for a proposed project. Assuming decision D3 is already selected, what is the expected value that should be associated with D3? (This decision branch is part of a larger tree.) Value, $ Probability 0.4 0.3 0.3 55 -30 10 D3 0.6 17 0.4 . a 5.8 b. 16 c.-10.2 d. 29