1. Which of the following constructor is used in the program given below? #include<iostream.h> class IndiaBix { int x, y; public: IndiaBix(int xx = 10, int yy = 20 ) { x = xx; y = yy; } void Display() { cout<< x << " " << y << endl; } ~IndiaBix() { } }; int main() { IndiaBix objBix; objBix.Display(); return 0; }