You center the contents of a control by setting the control's TextAlign property.

What will the following C++11 code display?

``` vector numbers {3, 5}; for (int val : numbers) cout << val << endl; ``` a. 5 5 5 b. 3 3 3 3 3 c. 3 5 d. Nothing. This code has an error.

Which library must be included to use the string stream class?

A. B. C. D. it is included in namespace std