What is the output of this program? #include <iostream> #include <algorithm> #include <vector> using namespace std; bool myfunction (int p,int q) { return (p < q); } int main () { int var[] = {90, 80, 70, 60, 50}; vector<int> Num(var, var + 5); partial_sort (Num.begin(), Num.begin() + 4, Num.end()); partial_sort (Num.begin(), Num.begin() + 4, Num.end(), myfunction); for (vector<int> :: iterator Iter = Num.begin(); Iter != Num.end(); ++Iter) cout << ' ' << *Iter; return 0; }

• A. 50 60 70 80 90
• B. 50 60 70 80
• C. 50 60 70
• D. 50 60
• E. 50