A firm has prepared the following binary integer program to evaluate a number of potential new capital projects. The firm's goal is to maximize the net present value of their decision while not spending more than their currently available capital. Max100x1+120x2+90x3+135x4s.t.150x1+200x2+225x3+175x4500{Constraint1}x1+x2+x3+x42{Constraint2}x2+x41{Constraint3}x2+x31{Constraint4}x1=x4{Constraint5}xj={1,ifprojectjisselected0,otherwise Which of the constraints ensures that at least two of the potential projects will be selected? Which of the constraints ensures that at least two of the potential projects will be selected? Multiple Choice Constraint 5 Constraint 4 Constraint 3 Constraint 1 Constraint 2