Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to grow plants faster [title] Perform a soil test. [step] In order for you to pick the correct fertilizer, you will have to see what your soil composition is. Many home and garden stores sell soil testing kits.

Ending1: In this test, you test your soil ph and soil concentrations over a period of twenty days. [substeps] Soil testing kits are also available at most garden supply stores. Ending2: The results from this test will tell you what nutrients you need to add to create the best balance for your plants to grow. [title] Pick an organic or inorganic fertilizer. Ending3: You can purchase test kits at most home improvement and garden stores, or you can pay a local company and visit them to see if they offer nitrogen testing kits. A number of home improvement and garden stores will also carry test kits, which can be purchased online. Ending4: The test kit reads and then displays your soil ph, ammonia levels, water content, and humidity levels. [substeps] Check the package to make sure the test is free of ammonia.

Answer format: ending1/ending2/ending3/ending4