What will be the output of the following C++ code? #include #include #include using namespace std; int main () int first[] = 5, 10, 15, 20, 25; int second[] = 50, 40, 30, 20, 10; vector v(10); vector :: iterator it; sort (first, first + 5); sort (second, second + 5); it = set_union (first, first + 5, second, second + 5, v.begin()); cout << int(it - v.begin()); return 0;

Answer: Option C