#include &lt;stdio.h&gt;    const int a = 1,  b = 2;    int main&#40;&#41;    &#123;        int x = 1;        switch &#40;x&#41;        &#123;        case a:            printf&#40;&quot;yes &quot;&#41;;        case b:            printf&#40;&quot;no\n&quot;&#41;;            break;        &#125;    &#125;
A. yes no
B. yes
C. no
D. Compile time error
Answer:A
#include &lt;stdio.h&gt;    const int a = 1,  b = 2;    int main&#40;&#41;    &#123;        int x = 1;        switch &#40;x&#41;        &#123;        case a:            printf&#40;&quot;yes &quot;&#41;;        case b:            printf&#40;&quot;no\n&quot;&#41;;            break;        &#125;    &#125;
A. yes no B. yes C. no D. Compile time error