5. Consider three workstations A, B, and C, with reliabilities of 0.98, 0.95, and 0.92, respectively. The workstations are arranged in a way that if one breaks down, the others must shut down. Consider two alternative designs for increasing the lines reliability. Plan 1 involves adding an identical backup line, and plan 2 involves providing a backup for each workstations. In either case, three workstations (A, B, and C) would be used with reliabilities equal to the original three.

Which plan would you choose? (15 points)