What Is the Output of the Following Code Fragment If $\quad$

Multiple Choice

What is the output of the following code fragment if the input value is 4? int num;
Int alpha = 10;
Cin >> num;
Switch (num)
{
Case 3:
$\quad$ Alpha++;
$\quad$ Break;
Case 4:
Case 6:
$\quad$ Alpha = alpha + 3;
Case 8:
$\quad$ Alpha = alpha + 4;
$\quad$ Break;
Default:
$\quad$ Alpha = alpha + 5;
}
Cout << alpha << endl;

A) 13
B) 14
C) 17
D) 22