12. According to the author, major limitation of anaerobic glycolysis is that it can
(A) produce in large animals more lactic acid than the liver can safely reconvert
(B) necessitate a dangerously long recovery period in a large animals
(C) produce energy more slowly than it can be used by large animals
(D) consume all of the available glycogen regardless of need
(E) reduce significantly the rate at which energy is produced by oxidativemetabolism