Describes culture media necessary for growing clostridium

Which of the following statements accurately describes the culture media necessary for growing Clostridium tetani? A.) A chemically defined medium is one made up of extracts such as those from yeasts, meat, or plants whose exact chemical composition may vary slightly. B.) A complex medium is one whose exact chemical composition is known. C.) Reducing media are complex media containing chemicals, such as thioglycolate, that combine with oxygen, creating an anaerobic environment. D.) Nutrient agar contains ingredients that combine with oxygen and remove it, creating an anaerobic environment.

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