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What will be the output of the following C++ code?
#include <iostream> 
#include <vector> 
#include <forward_list>  
 
using namespace std; 
 
int main() 
{ 
    forward_list<int> fl1 = {1,7,8,9,10};
    forward_list<int> fl2 = {2,3,4,5,6};
    fl1.splice_after(fl1.begin(), fl2);
    for (int&c : fl1)  
        cout << c << " ";
    cout<<endl;
    return 0; 
}

A. 1 2 3 4 5

B. 1 2 3 4 5 6 7 8 9 10

C. 1 7 8 9 10

D. 2 3 4 5 6

Answer: Option B


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