Sentence Correction (SC) | Re: The surest way of stopping the manufacture

The surest way of stopping the manufacture of methamphetamine is the requirement for a prescription for its essential ingredient, pseudoephedrine.
A. The surest way ofstopping the manufacture of methamphetamine isthe requirement for a prescription for its essential ingredient, pseudoephedrine.- Not parallel .
B. The surest wayto stop the manufacturing of methamphetamine isrequiring a prescription for its essential ingredient, it being pseudoephedrine.- Not parallel .
C. The surest way to stop
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