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Which of the following statement about Homeostasis is incorrect?
  • (A)  There is a definite control system that regulates the homeostatic activities
  • (B)  Homeostatic mechanisms keep the internal environment fixed despite of wide changes in external environment
  • (C)  Because of this the fluctuations of internal environment are of extremely narrow range as compared to that of external environment
  • (D)  All are correct