Consider the following two C++ programs P and P2 and two statements S and S2 about the programs: P1 P2 double a = 1, b void f(int a, int*b, =2; int &c) double &f(double { a = 1; &d) *b=2; c = 3; d = 4; return b; int main() int main() k K int i = 0; f(a) = 5; f(i, &i, i): cout < < a < < cout < < i;