Which of These Will You Click Select as X in This

Multiple Choice

Which of these will you click select as X in this series of clicks/entries/selections to edit relationships between Pivot tables: Power Pivot window > Design tab > Manage Relationships command > Manage Relationships dialog box > Relationship > Edit > X > Use the drop-down and list box controls on this form to select the appropriate table and field names?

A) Warning Dialog box
B) Format Cells dialog box
C) Create Relationship Dialog box
D) Edit Relationship Dialog box