#include &lt;iostream&gt;    using namespace std;    int main&#40;&#41;    &#123;        int num = 0x20 + 020 + 20;        cout &lt;&lt; sizeof&#40;num&#41;&lt;&lt;'\n';        return 0;    &#125;
A. 2
B. 4
C. Depends on compiler.
D. garbage
Answer:A
#include &lt;iostream&gt;    using namespace std;    int main&#40;&#41;    &#123;        int num = 0x20 + 020 + 20;        cout &lt;&lt; sizeof&#40;num&#41;&lt;&lt;'\n';        return 0;    &#125;
A. 2 B. 4 C. Depends on compiler. D. garbage