For which of the following nerve palsies is the below test detected?

Ans. B. Ulnar nerveThe picture shows the card test which tests the ulnar nerve (palmar interossei).* In this test, the examiner inserts a card between the two extended fingers, and the patient is asked to hold it as tightly as possible, while the examiner tries to pull the card out.* The power of adductors palmar interossei-adduction (PAD) can thus be judged.* Ulnar nerve supplies the hypothenar muscles, all the palmar and dorsal interossei and medial two lumbricals.