Which of the following best describes what occurs as the density of a QS bacterial population increases? Choose 1 Choose 1 (Choice A) A The concentration of QS signaling molecules decreases, eventually triggering a change in gene expression throughout the bacterial population. (Choice B) B The concentration of QS signaling molecules increases, eventually triggering a change in gene expression in a few members of the bacterial population. (Choice C) C The concentration of QS signaling molecules decreases, eventually triggering a change in gene expression in a few members of the bacterial population. (Choice D) D The concentration of QS signaling molecules increases, eventually triggering a change in gene expression throughout the bacterial population.