Width = "*" Width = "Auto" Both does not represent the same functionality.
B
Correct answer
Explanation
Width='' and Width='Auto' represent completely different sizing behaviors in WPF/XAML. Width='' (star sizing) means the element will share available space proportionally with other star-sized elements in a grid. Width='Auto' means the element will size itself to fit its content. These are fundamentally different - one is proportional sharing of available space, the other is content-driven sizing.