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What will be the output of the following C++ code?
#include <iostream>
using namespace std;
int main()
{
    int a = 10;
    if (a < 10) 
    {
        for (i = 0; i < 10; i++)
           cout << i;
    }
    else 
    {
        cout << i;
    }
    return 0;
}

A. 0123456789

B. 123456789

C. 0

D. error

Answer: Option D


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