You should add the static keyword in the place of ? in which of the following function:

Question

```
#include
using namespace std;

class Test
{
public:
? int square(int n)
{
return n * n;
}

? int getAge()
{
return age;
}

private:
int age;
};
```

a. none
b. in the square function because the function does not use any instance data fields.
c. in the getAge function
d. in both lthe square function and the getAge function

Answer 1

b. in the square function because the function does not use any instance data fields.