Consider a capital budgeting example with five projects from which to select. let xi= 1 if project i is selected, 0 if not, for i = . write the appropriate constraint(s) for each condition. conditions are independent. choose the correct constraint for: if project 1 is chosen, project 5 must not be chosen.

(a) x1 + x5 < = 1

(b) x1 = x5

(c) x1 - x5 = 0

(d) x1 + x5 = 1

(e) x1 - x5 < = 0