Saddle Joints Have Concave and Convex Surfaces

Saddle joints have concave and convex surfaces.Name the two bones of the hand that articulate to form a saddle joint.

A) The scaphoid of the middle finger and lunate of the index finger.
B) The scaphoid of the index finger and the triquetrum of the middle finger.
C) The trapezium of the ring finger and the capitate of the fourth finger.
D) The trapezium of the carpal bone and the thumb's metacarpal.