Which of the Following Statements BEST Describes Hand Mobility That

Which of the following statements BEST describes hand mobility that allows greater closure of the hand?

A) Available joint range of motion increases in first three digits then decreases for fourth and fifth digits
B) Available joint range of motion increases from radial to ulnar aspects of the hand
C) Available joint range of motion remains the same from radial to ulnar aspects of the hand
D) Available joint range of motion increases from ulnar to radial aspects of the hand