Jenny has ______________ for Li Ming and Danny.[ ]

A. a pair of skates

B. two pairs of skates

C. two pair of skate

D. two skates

下列说法中错误的是[ ]

A.一组对边平行且一组对角相等的四边形是平行四边形

B.对角线互相垂直的平行四边形是正方形

C.四个角相等的四边形是矩形

D.每组邻边都相等的四边形是菱形