c++ questions. ASAP

Brilliant | Math and... us= Coursera | Online C.. Oracle Academy Welcome | Texas A. Sophiya Neupane: Attempt 1 X. Question 27 (4 points) Given the following class definition, if we want to overload the = = operator then the correct implementation is: class Cup public: Cup ( ) ; void fill (float v) { volume += v; } void pour (float v) ; void display ( ) ; private: float volume; bool Cup::operator==(){return volume = = volume;] bool Cup:operator==(){return true;] bool Cup:==(Cup& c)[return volume = = c.volume;] bool Cup::operator==(Cup& c)[return volume = = c.volume;] Saved