Use the given decision tree to answer the questions that follow. Payoffs are costs. P($2) = 0.23 31 $4,800 A 52 $4,500 C $4,200 B $4,800 a) The expected value at node A, EV(A) = $ b) The expected value at node B, EV (B) = $ c) The expected value at node C, EV(C) = $ Next