• A Call by value passes the address of the argument to the function, while call by reference passes a copy of the argument value.
  • B Call by value passes a copy of the argument value to the function, while call by reference passes a reference to the argument variable.
  • C Call by value and call by reference are the same thing.
  • D Call by value passes a reference to the argument variable, while call by reference passes a copy of the argument value.
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