What is the most common cause of injury of membranous urethra?() A: Pelvic fracture B: Gunshot wound C: Straddle injury D: Iatrogenic injury

Reactions<br/>to penicillin and immunizing agents is ( ) A: opportunistic<br/>disease B: nosocomial<br/>infection C: Iatrogenic<br/>disease D: none<br/>of the above

Which is the most common reason of membranous urethral injury? ( ) A: Penetrating wound B: Straddle injury C: Iatrogenic injuries D: Pelvic fracture E: Catheterization