Which Are the Attachments of the Flexor Digitorum Profundus

Which are the attachments of the flexor digitorum profundus?

A) anterior radius to the anterior surfaces of fingers two through five
B) middle posterior tibia to the plantar surface of toes two through five
C) medial and anterior ulna to the anterior surfaces of fingers two through five
D) distal posterior fibula to the plantar surface of toes two through five