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
Anatomical feratures of prostatic Urethra are following except? 
Select and explain. 
A. Trapezoidal shape on cross- section, B. Trapezoidal shape on cross- section, C. Trapezoidal shape on cross- section, D. Urethral Crest on posterior wall
A: Trapezoidal shape on cross- section
Answer: A: Trapezoidal shape on cross- section 
Explanation: A i.e. Trapezoidal shape on cross- section