Which Are the Attachments of the Dorsal Interossei Manus

Which are the attachments of the dorsal interossei manus?

A) metacarpal of fingers one through five to the proximal phalanx of fingers two,three,and four,on the side away from the center of the middle finger
B) distal tendons of the flexor digitorum profundus to the distal tendons of the extensor digitorum (the dorsal digital expansion)
C) metacarpal of fingers two,four,and five to the proximal phalanx of fingers two,four,and five on the "middle finger side"
D) Third metacarpal to the thumb