Câu 27: CPP: C++ Certified Professional Programmer

What happens when you attempt to compile and run the following code?#include #include #include using namespace std;class B { int val;public:B(int v):val(v){}int getV() const {return val;} bool operator struct Out { ostream & out;Out(ostream & o): out(o){}void operator() (const T & val ) { out d1(t, t+10); sort(d1.begin(), d1.end()); deque ::iterator it = upper_bound(d1.begin(), d1.end(), B(4)); for_each(it, d1.end(), Out (cout)); cout<<endl; return 0;}Program outputs:

1. A. 5 6 7 8 9 10 — đáp án hiện tại
2. B. 4 5 6 7 8 9 10
3. C. 6 7 8 9 10
4. D. 1 2 3 4 5
5. E. 1 2 3 4