switch (phoneDigit){    case 1:   num = 1;     break;    case 2:   num = 2;     break;    case 3:   num = 3;     break;    case 4:   num = 4;     break;    default:  num = 0;                 break;}
Looking at the example above, when phoneDigit has a value of ‘Q', what value is stored in num?

A. 1
B. 0
C. Q
D. not enough information given

Answer: B