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1 point Copy constructors have a special signature, for example class Rational public: 1/Copy constructor and copy assignment Rational (const Rational & original ) noexcept = default; Rational & operator-( const Rational & rhs > noexcept. default; 1/ Conversion constructors Rational const long long numerator = e, const long long denominator = 1 ) Rational const double value }; W also default constructor // Destructor Rational() noexcept - default; // operators and mutators 11. private: // Instance attributes long long int _numerator - B; long long int _denominator = 11 }; Why must the parameter of the copy constructor be of type constant reference? A constant reference is not required, but it's a good programming practice to specify the parameter want change Avoids an infinite loop of the copy constructor calling itself A constant reference allows constant objects to be passed A constant reference allows temporary unnamed objects to be passed A constant reference allows user-defined literal values to be passed