#include &lt;iostream&gt;    #include &lt;complex&gt;    using namespace std;    int main&#40;&#41;    &#123;        complex&lt;double&gt; c_double&#40;2, 3&#41;;        complex&lt;int&gt; c_int&#40;4, 5&#41;;        c_double *= 2;        c_double = c_int;        cout &lt;&lt; c_double;        return 0;    &#125;
A. (2, 3)
B. (4, 5)
C. (8, 15)
D. None of the mentioned
Answer:A
#include &lt;iostream&gt;    #include &lt;complex&gt;    using namespace std;    int main&#40;&#41;    &#123;        complex&lt;double&gt; c_double&#40;2, 3&#41;;        complex&lt;int&gt; c_int&#40;4, 5&#41;;        c_double *= 2;        c_double = c_int;        cout &lt;&lt; c_double;        return 0;    &#125;
A. (2, 3) B. (4, 5) C. (8, 15) D. None of the mentioned
Explanation:We are just copying the value of c_int into c_double, So it’s printing as (4,5).