When opened, how does a book file appear in InDesign?

What is the output of the following code?stackType stack;int x, y;x = 5;y = 3;stack.push(4);stack.push(x);stack.push(x + 1);y = stack.top();stack.pop();stack.push(x + y);x = stack.top();stack.pop();cout << "x = " << x << endl;cout << "y = " << y << endl;

A. x = 5 y = 6 B. x = 4 y = 3 C. x = 5 y = 3 D. x = 11 y = 6

Which statement is true of using files?

a. Files must be opened by the user before being used. b. Files must be closed by the user after being used. c. Files that are opened must be closed. d. All of the above. e. None of the above.