Which statement is incorrect with regards to ulnar nerve blocks at the wrist

• A. the ulnar nerve lies lateral to the artery
• B. the ulnar nerve lies lateral to flexor carpi ulnaris
• C. the site of needle insertion is directly lateral to flexor carpi ulnaris
• D. lignocaine with adrenaline can be used safely
• E. if lignocaine is used the block lasts for 1-2 hours