Which of the following statements is true?
A. If a substance is toxic, its toxicity is highly dependent on its form and where it is present in the environment.
B. If a substance is toxic, it is equally toxic regardless of its form or where it is present in the environment.
C. The most important factor in the toxicity of a substance is its persistence in the environment.
D. The most important factor in the toxicity of a substance is the route it enters our bodies.
E. None of these statements is true.
Answer: A
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