This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'The muscles attached to perineal body are A/E \nSelect and explain. \nA. Ischiocavernosum, B. Bulbospongiosm, C. Superficial transverse perinea, D. Deep transverse perinea', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ten muscles of the perineum converge and interlace in the perineal body - a) Two unpaired : (i) External anal sphincter, (ii) Fibres of longitudinal muscle coat of anal canal. b) Four paired:- (i) Bulbospongiosus, (ii) Superficial transverse perenei, (iii) Deep transversus perenei, (iv) levator ani, In females, sphincter urethrovaginalis is also attached here. Ref: Gray&;s anatomy text book of anatomy BD chaurasia 21st Ed.', 'role': 'assistant'}]