Use the following data for Problems 129-131 A firm has identified four projects for possible funding in the next budget cycle. Project First Cost ($M) PW(SM) 12 18 24 30 225 250 320 400 D-130 If the projects have the following contingencies, what is the total number of possible investment strategies (combinations) that the firm can use? Project A can be invested in only by itself; Project D is chosen only if Project B is chosen. (a) 0 (b) 2 (c) 4 (d) 6