#include &lt;stdio.h&gt;    union Sti    &#123;        int nu;        char m;    &#125;;    int main&#40;&#41;    &#123;        union Sti s;        printf&#40;&quot;%d&quot;, sizeof&#40;s&#41;&#41;;        return 0;    &#125;
A. 8
B. 5
C. 9
D. 4
Answer:A
#include &lt;stdio.h&gt;    union Sti    &#123;        int nu;        char m;    &#125;;    int main&#40;&#41;    &#123;        union Sti s;        printf&#40;&quot;%d&quot;, sizeof&#40;s&#41;&#41;;        return 0;    &#125;
A. 8 B. 5 C. 9 D. 4
Explanation:Since the size of a union is the size of its maximum datatype, here int is the largest hence 4.