What will be the output of the following C++ code?

#include <iostream>
#include <cmath>
#include <list>
using namespace std;
bool same_integral_part (double first, double second)
{  
    return ( int(first) == int(second) ); 
}
struct is_near 
{
    bool operator() (double first, double second)
    { 
        return (fabs(first - second) < 5.0); 
    }
};
int main ()
{
    double mydoubles[] = { 12.15,  2.72, 73.0,  12.77,  3.14, 12.77, 73.35, 72.25, 15.3,  72.25 };
    list<double> mylist (mydoubles, mydoubles + 10);
    mylist.sort();
    mylist.unique();
    mylist.unique (same_integral_part);
    mylist.unique (is_near());
    for (list<double> :: iterator it = mylist.begin(); it != mylist.end(); ++it)
        cout << ' ' << *it;
    cout << '\n';
    return 0;
}

A. 2.72 12.15 72.25

B. 12.15 73.0 12.77

C. 73.35

D. 74.45

Answer: Option A