A.①+②+③ B.①+②+③+④ C.①+②+③+④+⑤ D.①+②+③+④+⑤+⑥
A.①+②+③ B.①+②+③+④+⑥ C.①+②+③+④+⑤ D.①+②+③+④+⑤+⑥
A.①+②+③ B.①+②+③+④+⑥ C.①+②+④+⑤+⑥ D.①+②+③+④+⑤+⑥