While swapping 2 numbers what precautions to be taken care?q

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While swapping 2 numbers what precautions to be taken care?
```
q = (q / p);
    p = p * q;
    q = p / q;
```

1. This code doesn’t swap 2 numbers
2. All data types are accepted except for (char *)
3. Data type should be either of short, int and long
4. Data type should be either of float and double
5. None of these

Correct Option: D

Data type should be either of float and double