Katarina isn't sure if her lab test is reliable. What is the BEST method she can use to make sure it is reliable? A. She should compare soil from two different locations and see if the results are similar. B. She should test the same substance multiple times to see if she gets the same results. C. She should describe her testing methods to other scientists to see if they agree with her. D. She should test many different substances and see if she gets many different results.