Celery stalks that are immersed in fresh water for several hours become stiff and hard. Similar stalks left in a 0.15M salt solution become limp and soft. From this we can deduce that the cells of the celery stalks areA) Hypotonic to both fresh water and the salt solutionB) Hypertonic to both fresh water and the salt solutionC) Hypertonic to fresh water but hypotonic to the salt solutionD) Hypotonic to fresh water but hypertonic to the salt solutionE) Isotonic with fresh water but hypotonic to the salt solution

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