What is the effect of the following code fragment?
```
int num1 = 2;
int num2;
cin >> num2;
if ( num2 % num1 == 0 )
cout << "first option" << endl;
else
cout << "second option" << endl;
```
a. assigns the character "%" to the variable num2 if num1 is 0, and displays first option
b. displays first option if num1 and num2 are equal to 0, and second option otherwise
c. displays first option if an even number is entered as input, and second option if an odd number is entered as input
d. displays first option if num1 and num2 are equal and second option otherwise
c. displays first option if an even number is entered as input, and second option if an odd number is entered as input
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