Suppose that num1, num2, and num3 are int variables and the following statements are executed in sequence.
1. num1 = 18;
2. num1 = num1 + 27;
3. num2 = num1;
4. num3 = num2 / 5; 5. num3 = num3 / 4;
The following table shows the values of the variables after the execution of each statement. (A ? indicates that the value is unknown. The orange color in a box shows that the value of that variable is changed.)