What output is displayed after the following segment of code executes: stack s; int a = 22, b = 44; s.push(2); s.push(a); s.push(a + b); b = s.top(); s.pop(); s.push(b); s.push(a - b); s.pop(); while (!s.empty()) {

cout << s.top() << endl;

s.pop();

}

A

2

22

66

B

66 22 2

C 44 22 2

D 44 22 66