#include &lt;iostream&gt;    using namespace std;    int main&#40;&#41;    &#123;        unsigned long x = 64;        cout &lt;&lt; x &lt;&lt; oct &lt;&lt; x &lt;&lt; endl;        return 0;    &#125;
A. 64100
B. 48
C. 345
D. None of the mentioned
Answer:A
#include &lt;iostream&gt;    using namespace std;    int main&#40;&#41;    &#123;        unsigned long x = 64;        cout &lt;&lt; x &lt;&lt; oct &lt;&lt; x &lt;&lt; endl;        return 0;    &#125;
A. 64100 B. 48 C. 345 D. None of the mentioned