#include &lt;stdio.h&gt;    int main &#40;&#41;    &#123;        int result;        char oldname&#91;&#93; = &quot;myfile2.txt&quot;;        char newname&#91;&#93; = &quot;newname.txt&quot;;        result = rename&#40;oldname, newname &#41;;        if &#40;result == 0&#41;            puts &#40; &quot;success&quot; &#41;;        else            perror&#40; &quot;Error&quot; &#41;;        return 0;    &#125;
A. name
B. new
C. newname
D. None of the mentioned
Answer:A
#include &lt;stdio.h&gt;    int main &#40;&#41;    &#123;        int result;        char oldname&#91;&#93; = &quot;myfile2.txt&quot;;        char newname&#91;&#93; = &quot;newname.txt&quot;;        result = rename&#40;oldname, newname &#41;;        if &#40;result == 0&#41;            puts &#40; &quot;success&quot; &#41;;        else            perror&#40; &quot;Error&quot; &#41;;        return 0;    &#125;
A. name B. new C. newname D. None of the mentioned
Explanation:In this program, We are renaming the myfile2 to newname by using the function rename.