This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Extremity, Subject name: Anatomy
Actions of the lumbricals are- 
Select and explain. 
A. Flexion at PIP and extension at DIP joints, B. Flexion at metacarpophalangeal and extension at PIP joints, C. Adduction of fingers, D. Abduction of fingers
B: Flexion at metacarpophalangeal and extension at PIP joints
Answer: B: Flexion at metacarpophalangeal and extension at PIP joints 
Explanation: Ans. is 'b' i.e., Flexion at metacarpophalangeal and extension at PIP joints Action of small muscles in handLumbricalsFlexion at metacarpophalangeal(MCP) and extension at PIP jointsDorsal InterosseiAbduction of fingersPalmar InterosseiAdduction of fingers