Which Is an Action of the Extensor Indicis

Which is an action of the extensor indicis?

A) ulnar deviation (adduction) of the hand at the wrist joint
B) extension of the little finger (finger number five) at the metacarpophalangeal and proximal and distal interphalangeal joints
C) flexion of the index finger (finger number two) at the metacarpophalangeal and proximal and distal interphalangeal joints
D) extension of the index finger (finger number two) at the metacarpophalangeal and proximal and distal interphalangeal joints