Answer:
When S mutans, lactobacilli, and other plaque species were compared in vitro for their ability to ferment sucrose at different pH values, S mutans was found to be more active than the other bacteria at pH 5.0, and thus, it is probably most active in vivo at the very pH at which the teeth begin to demineralize.
I believe the answer is D) ATP is too unstable
Whenever I feel sad, worried, and alone I would just go upstairs with my drawing book and other supplies. I would sit at a corner of the roof gazing the beauty of sky, thhe stars, the clouds, the nature, there I would make anything I found And I will try to find peace in it. This is how feel good after a bad mood.
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If there's something wrong, do lemme know in comments :D