Q14 : Consider a capital budgeting example with five projects from which to select. Let x1 = 1 if project a is selected, 0 if not, for a = 1, 2, 3, 4, 5. Projects cost $100, $200, $150, $75, and $300, respectively. The budget is $450. The appropriate constraint for the following condition: Choose no fewer than 3 projects is:

a.

x1 + x2 + x3 + x4 3

b.

x1 + x2 + x3 + x4 + x5 3

c.

x1 + x2 + x3 3

d.

x1 + x2 + x3 + x4 + x5 3