What will be the output of the following C++ code? #include using namespace std; class sample public: sample() cout << "X::X()" << endl; sample( sample const & ) cout << "X::X( X const & )" << endl; sample& operator=( sample const & ) cout << "X::operator=(X const &)" << endl; ; sample f() sample tmp; return tmp; int main() sample x = f(); return 0;

Answer: Option C