In evaluating three mutually exclusive alternatives by the B/C method, the alternatives were ranked A, B, and C, respectively, in terms of increasing cost, and the following results were obtained for overall B/C ratios: 1.1, 0.9, and 1.3. On the basis of these results, it is correct to: (choose one)

1.Select only alternative C

2.Compare A and C incrementally

3.Select only alternative A

4.Select alternatives A and C