During prolonged fasting,which of the following is the correct order of utilization of energy sources in the human body?

  • A
    The first to be used up are carbohydrates,next fat is withdrawn and proteins are metabolised at the last.
  • B
    The first to be used up are the fats,next carbohydrates are withdrawn from stored glycogen in the liver and muscles and proteins are withdrawn at the last.
  • C
    First lipids are used up,then proteins and finally carbohydrate.
  • D
    None of these.

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