Cho lục giác đều ABCDEF tâm O. Các vec tơ đối của vecto OD là:

A. $\stackrel{\rightharpoonup }{OA},\stackrel{\rightharpoonup }{DO},\stackrel{\rightharpoonup }{EF},\stackrel{\rightharpoonup }{CB}$

B. $\stackrel{\rightharpoonup }{OA},\stackrel{\rightharpoonup }{DO},\stackrel{\rightharpoonup }{EF}\stackrel{\rightharpoonup }{,OB},\stackrel{\rightharpoonup }{DA}$

C. $\stackrel{\rightharpoonup }{OA}, \stackrel{\rightharpoonup }{DO},\stackrel{\rightharpoonup }{EF},\stackrel{\rightharpoonup }{CB},\stackrel{\rightharpoonup }{DA}$

D. $\stackrel{\rightharpoonup }{DO},\stackrel{\rightharpoonup }{EF},\stackrel{\rightharpoonup }{CB},\stackrel{\rightharpoonup }{BC}$