Choose the appropriate letters A-C. People usually have（） A: a mixture of fingertip patterns which are identical on each hand. B: a mixture of patterns with similarities between hands. C: a different pattern on each hand.

Turning wrist refers to the movement of the arm, inside and outside the circle driven by the fingertip based on the hand type of orchid fingers, which is divided into turning wrist with one hand and turning wrist with both sides.

Turning wrist refers to the movement of the arm, inside and outside the circle driven by the fingertip based on the hand type of orchid fingers, which is divided into turning wrist with one hand and turning wrist with both sides. A: 正确 B: 错误