#include &lt;iostream&gt;    #include &lt;complex&gt;    using namespace std;    int main&#40;&#41;    &#123;       complex&lt;double&gt; c1&#40;4.0,3.0&#41;;       cout &lt;&lt; &quot;c1: &quot; &lt;&lt; c1;       complex&lt;float&gt; c2&#40;polar&#40;5.0,0.75&#41;&#41;;       cout &lt;&lt; c1 + complex&lt;double&gt;&#40;c2.real&#40;&#41;,c2.imag&#40;&#41;&#41;;       return 0;    &#125;
A. c1: (4,3)(7.65844,6.40819)
B. c1: (4,3)(7,6)
C. both a & b
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; c1&#40;4.0,3.0&#41;;       cout &lt;&lt; &quot;c1: &quot; &lt;&lt; c1;       complex&lt;float&gt; c2&#40;polar&#40;5.0,0.75&#41;&#41;;       cout &lt;&lt; c1 + complex&lt;double&gt;&#40;c2.real&#40;&#41;,c2.imag&#40;&#41;&#41;;       return 0;    &#125;
A. c1: (4,3)(7.65844,6.40819) B. c1: (4,3)(7,6) C. both a & b D. None of the mentioned
Explanation:We are adding the two complex numbers and printing the result.