#include &lt;stdio.h&gt;    int main&#40;&#41;    &#123;        const int i = 10;        int *ptr = &amp;i;        *ptr = 20;        printf&#40;&quot;%d\n&quot;, i&#41;;        return 0;    &#125;
A. Compile time error
B. Compile time warning and printf displays 20
C. Undefined behaviour
D. 10
Answer:A
#include &lt;stdio.h&gt;    int main&#40;&#41;    &#123;        const int i = 10;        int *ptr = &amp;i;        *ptr = 20;        printf&#40;&quot;%d\n&quot;, i&#41;;        return 0;    &#125;
A. Compile time error B. Compile time warning and printf displays 20 C. Undefined behaviour D. 10