Comment on the output of the following C code.

#include <stdio.h>
int main()
{
    int a = 1;
    switch (a)
    case 1:
        printf("%d", a);
    case 2:
        printf("%d", a);
    case 3:
        printf("%d", a);
    default:
        printf("%d", a);
}

A. No error, output is 1111

B. No error, output is 1

C. Compile time error, no break statements

D. Compile time error, case label outside switch statement

Answer: Option D