In vertebrate animals, brown fat tissue's color is due to abundant blood vessels and capillaries. White fat tissue, on the other hand, is specialized for fat storage and contains relatively few blood vessels or capillaries. Brown fat cells have a specialized protein that dissipates the proton-motive force across the mitochondrial membranes. Which of the following might be the function of the brown fat tissue?A) to increase the production of ATPB) to allow other membranes of the cell to perform mitochondrial functionsC) to allow the animals to regulate their metabolic rate when it is especially hotD) to increase the rate of oxidative phosphorylation from its few mitochondriaE) to regulate temperature by converting most of the energy from NADH oxidation to heat