Which of the following statements about a tab control in a form is incorrect? A. It can contain only one object. B. It defines a layered space. C. It is a control object. D. It is created in multipage forms.

The correct answer is: A. It can contain only one object.

A tab control is a control object that allows you to create a multipage form. It can contain multiple objects, such as text boxes, labels, and buttons. Each object on a tab control is displayed on a separate page. To move from one page to another, the user clicks on the tab for the desired page.

Option B is correct. A tab control defines a layered space. This means that the objects on the different pages of a tab control are stacked on top of each other. The object on the top page is visible, and the objects on the bottom pages are hidden.

Option C is correct. A tab control is a control object. This means that it is a building block that can be used to create other forms.

Option D is incorrect. A tab control can be created in any type of form, not just multipage forms.