Câu 17: CPP: C++ Certified Professional Programmer

What happens when you attempt to compile and run the following code?#include #include #include using namespace std;int main(){int t[] ={ 1, 1, 2, 2, 3, 3, 4, 4, 5, 5 };list v(t, t+10);set s1(v.begin(),v.end());if (s1.count(3) == 2) {s1.erase(3);}for(set ::iterator i=s1.begin();i!= s1.end(); i++) { cout<<*i<<" ";}return 0;}

1. A. program outputs: 1 2 3 4 5 — đáp án hiện tại
2. B. program outputs: 1 2 4 5
3. C. program outputs: 1 1 2 2 3 4 4 5 5
4. D. program outputs: 1 1 2 3 3 4 4 5 5
5. E. compilation error