What will be displayed by the following switch statement? char ch = 'a';

switch (ch)
{
case 'a':
case 'A':
cout << ch << endl; break;
case 'b':
case 'B':
cout << ch << endl; break;
case 'c':
case 'C':
cout << ch << endl; break;
case 'd':
case 'D':
cout << ch << endl;
}

Answers
aa
abcd
a
ab