"A" versus "C"

This question threw me for a loop, mostly due to the description of packing the wound with a "sweet substance" and nothing related to an "absorptive substance" in the premise. From the "sweet substance" descriptor, my mind went to using the sugar as a food substance, which is described in answer choice "C." The term "sweet substance" does not at all imply anything to do with a dehydrating effect and instead might imply any sweet substance such as honey could have the same effect as the sugar. Although the term "bacteria" often gets a bad reputation, the human body could not survive without bacteria and some bacteria are very beneficial in wound care. So, if the beneficial bacteria out-competed the bad bacteria inside the deep wound, then the sugar as a nutrient could have a positive effect and thus solve the paradox. For this reason, I believed answer choice "C" to be the best answer. However, I may also have been over-thinking the question from a scientific point-of-view, but I would appreciate some more clarification and input on this question.