An antibiotic is a drug prescribed to people who are sick due to a bacterial infection. Streptococcus bacteria may cause a throat infection in humans. An experiment was designed to test the effects of two different antibiotics, A and B, on samples of Streptococcus bacteria. The graphs below show the results of this experiment.
Describe how the graph for antibiotic B shows that it was the most successful in controlling the number of bacteria.
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