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': 'True about prostatic urethra are all except: \nSelect and explain. \nA. Trapezoid in cross-section, B. Presence of verumontanum, C. Opening of prostatic ducts, D. Contains urethral crest', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Trapezoid in cross sectionProstatic urethra is semilunar (transversely arched) in cross-sectionIn transverse section- Preprostatic pa --> Stellate (star shaped)- Prostatic pa -->Transversely arched (semilunar)- Membranous pa --> Stellate- Bulbar & penile -->Transverse- External orifice -->Sagittal', 'role': 'assistant'}]