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What is the output of the below C++ program?

#include <iostream>
        using namespace std;
        namespace first
        {
            int var = 5;
        }
        namespace second
        {
            double var = 3.1416;
        }
        int main ()
        {
            int a;
            a = first::var + second::var;
            cout << a;
            return 0;
       }

A8.31416

B8

C9

DCompilation Error

Answer: Option (Login/Signup)

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