After Reading the Paragraph Below, Answer the Question(s) That Follow(s)

After reading the paragraph below, answer the question(s) that follow(s) .
As a scientist employed by the Health Products and Food Branch of Health Canada, you've been asked to sit on a panel to evaluate a pharmaceutical company's application for approval of a new weight loss drug called Fat Away. The company has submitted a report summarizing the results of their animal and human testing. In the report, it was noted that Fat Away works by affecting the electron transport chain. It decreases the synthesis of ATP by making the mitochondrial membrane permeable to H⁺, which allows H⁺ to leak from the intermembrane space to the mitochondrial matrix. This effect leads to weight loss.
-The most obvious possible side effect of Fat Away that Health Canada might be particularly concerned with would be

A) increasing the incidence of cancer.
B) the potentially lethal collapse of ATP levels in critical cells.
C) off target effects of the drug on organelles other than mitochondria.
D) the inhibition of glycolysis.