Which Are Actions of the Flexor Digitorum Superficialis

Which are actions of the flexor digitorum superficialis?

A) extension of fingers two through five at the metacarpophalangeal and proximal interphalangeal joints and flexion of the hand at the wrist joint
B) flexion of fingers two through five at the metacarpophalangeal and proximal interphalangeal joints and extension of the hand at the wrist joint
C) flexion of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints and flexion of the hand at the wrist joint
D) flexion of fingers two through five at the metacarpophalangeal and proximal interphalangeal joints and flexion of the hand at the wrist joint