1. Calculate the values of x and y under different parameter passing methods. int x=5, y-10; void f1 (int a, int b) a a +b; b-y b; x=x+1; y-y 1; main0 fl(x, yl printf("X3%d y=%d ", x, y); (a) Call-by-value: (b) Call-by-value-result (c) Call-by-reference: x=