what type of variable retain its value in between function call?

Which of the following options below is legal in C++? O int calc(int num1, int num2, int num3 - 10, int num4- 20) int calc(int num 1, int num2 10. int num3, int num4-20); O int calcint numi 10. int num2 - 20 int num3 int numd) int calclint num1 10, int num2, int num3 20 int num4) num1, int num2, int num3 - 10, int numa -20)