Which of these function declarations is not a valid overload for the following function declaration? double calculate mpg (double miles, double gallons); double calculate mpg (int miles, int gallons, int decimal places); int calculate mpg (double miles, double gallons); double calculate mpg (double miles, double gallons, int decimal places); double calculate mpg (int miles, int gallons);

Which of these function declarations is not a valid overload for the following function declaration? double calculate_mpg (double miles, double gallons): double calculate_mpg (int miles, int gallons, int decinal places); int calculate_mpg (double miles, double gallons): double calculate_mpg (double miles, double gallons, int decimal places); double calculate_mpg (int miles, int gallons)