Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to test for cyanuric acid [title] Make sure your state allows cyanuric acid. [step] Every state has different laws and different levels they allow, from 30 ppm as the maximum to 100 ppm as the maximum. It's essential you know what you are testing for, depending on your location.

Ending1: [substeps] In oregon, the minimum required is a 30 ppm three times maximum. California requires an 80 ppm of cyanuric acid. Ending2: [title] Visit your state's plus = 0 data center. [step] The plus is 2, therefore, you are testing for cyanuric acid. Ending3: [title] Understand the benefit of cyanuric acid. [step] In the right amounts, cyanuric acid protects the chlorine in a pool from ultraviolet sunlight, thereby reducing the amount of chlorine lost over time. Ending4: [substeps] Add cyanuric acid to one gallon of water in a pool or bath. Adding it to a full liter of water is not advisable.

Answer format: ending1/ending2/ending3/ending4