Which of the Following Statements Is MOST CORRECT About the Longitudinal

Multiple Choice

Which of the following statements is MOST CORRECT about the longitudinal arch of the hand?

A) Rigid arch, capitate is the keystone of the arch
B) Passes through all metacarpal heads, third metacarpal is the keystone
C) Second and third metacarpals are central pillars, and thumb and fourth and fifth digits move around them
D) Supported by the wrist and extrinsic hand muscles