If the coliform bacteria is present in a sample of water, then the coliform test to be conducted is_____________?_x005F_x000D_1) presumptive coliform test_x005F_x000D_2) confirmed coliform test_x005F_x000D_3) completed coliform test_x005F_x000D_The correct answer is ?

• A. only (1)
• B. both (1) and (2)
• C. both (1) and (3)
• D. all (1), (2) and (3)