Regarding flexor digitorum longus:

• A. its four tendons divide under the flexor retinaculum
• B. it arises from the tibia and interosseous membrane only
• C. the medial two tendons receive a strong slip from the tendon of flexor hallucis longus
• D. the tendons have no flexor sheaths
• E. it inserts into the bases of the middle phalanges