Hibernating animals have tissues containing mitochondria with a membrane protein that accelerates electron transport while blocking the synthesis of $ATP$. What is the consequence of this?

• A
  Hibernating animals can synthesise fat instead of wasting energy of respiration.
• B
  Energy is saved because glycolysis and the citric acid cycle shuts down.
• C
  Pyruvate is converted to lactic acid by anaerobic fermentation.
• D
  The energy of respiration is converted into heat.