With regard to the urethra in the young adult male, which is NOT true?

• A. the prostatic urethra is narrower than the membranous urethra
• B. it is approximately 20cm long
• C. has a short dilated region just proximal to the external urethral meatus
• D. it is horizontal in cross-section when empty
• E. the bulbous part is part of the spongy urethra