answer the above all questions .

1) Consider the following overloaded functions, declared in a program X: int sum (int,int) float sum (float, float) double sum (double, double) If you are asked to declare one more overloaded function of sum0 in the same program X, such that the new overloaded function should not conflict with the existing three overloaded functions or should not rise error. Which one of the following functions, you will not select to declare? a) float sum (int, int); b) int sum (float, double) c) float sum (double, int) d) double sum (string, string)