You need to ensure that the app meets the business requirements for user interface design.
Which code segment should you insert at line UL15?
A. layout: new ui.ListLayout ( ui.GridLayout{ horizontal: "false" })
B. layout: new ui.GridLayout({ groupHeaderPosition: "top" })
C. layout: new ui.ListLayout({ horizontal: "false" })
D. layout: new ui.GridLayout( ui. ListLayout{ groupHeaderPosition: "top" })