#include &lt;iostream&gt;    #include &lt;deque&gt;    using namespace std;    int main &#40;&#41;    &#123;        deque&lt;int&gt; mydeque &#40;5&#41;;          deque&lt;int&gt;::reverse_iterator rit = mydeque.rbegin&#40;&#41;;        int i = 0;        for &#40;rit = mydeque.rbegin&#40;&#41;; rit!= mydeque.rend&#40;&#41;; ++rit&#41;            *rit = ++i;        for &#40;deque&lt;int&gt; :: iterator it = mydeque.begin&#40;&#41;;        it != mydeque.end&#40;&#41;; ++it&#41;        cout &lt;&lt; ' ' &lt;&lt; *it;        return 0;    &#125;
A. 12345
B. 1234
C. 54321
D. 43210
Answer:A
#include &lt;iostream&gt;    #include &lt;deque&gt;    using namespace std;    int main &#40;&#41;    &#123;        deque&lt;int&gt; mydeque &#40;5&#41;;          deque&lt;int&gt;::reverse_iterator rit = mydeque.rbegin&#40;&#41;;        int i = 0;        for &#40;rit = mydeque.rbegin&#40;&#41;; rit!= mydeque.rend&#40;&#41;; ++rit&#41;            *rit = ++i;        for &#40;deque&lt;int&gt; :: iterator it = mydeque.begin&#40;&#41;;        it != mydeque.end&#40;&#41;; ++it&#41;        cout &lt;&lt; ' ' &lt;&lt; *it;        return 0;    &#125;
A. 12345 B. 1234 C. 54321 D. 43210
Explanation:In this program, We used the operation of rbegin and rend on dequeue and produced the result.