<prompt> A patient with leprosy presents with clumsiness of hand. His ulnar nerve is affected. Clumsiness is due to palsy of which muscle -Extensor carpi ulnarisAbductor pollicis brevisOppenens pollicisInterosseous muscle  <response>: Clumsiness is due to paralysis of muscles which are involved in fine movement i.e., interossei, lumbricals and hypothenar muscles. 