#include &lt;stdio.h&gt;    void main&#40;&#41;    &#123;        int ch;        printf&#40;&quot;enter a value btw 1 to 2:&quot;&#41;;        scanf&#40;&quot;%d&quot;, &amp;ch&#41;;        switch &#40;ch, ch + 1&#41;        &#123;        case 1:            printf&#40;&quot;1\n&quot;&#41;;            break;        case 2:            printf&#40;&quot;2&quot;&#41;;            break;        &#125;    &#125;
A. 1
B. 2
C. 3
D. Run time error
Answer:A
#include &lt;stdio.h&gt;    void main&#40;&#41;    &#123;        int ch;        printf&#40;&quot;enter a value btw 1 to 2:&quot;&#41;;        scanf&#40;&quot;%d&quot;, &amp;ch&#41;;        switch &#40;ch, ch + 1&#41;        &#123;        case 1:            printf&#40;&quot;1\n&quot;&#41;;            break;        case 2:            printf&#40;&quot;2&quot;&#41;;            break;        &#125;    &#125;
A. 1 B. 2 C. 3 D. Run time error