This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Muscles paralysed In Erbs palsy are all except \nSelect and explain. \nA. Biceps brachii, B. Triceps muscle, C. Brachioradialis, D. Brachialis muscle', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Muscles paralysed : Muscles involved in erbs palsy : mainly biceps Brachii Deltoid Brachialis Brachioradialis Paly supraspinatus, infraspinatus and supinator ref : maheswari 9thed', 'role': 'assistant'}]