A 14 year old girl, Salu, a regular swimmer presents with sudden

A 14 year old girl, Salu, a regular swimmer presents with sudden onset of pain abdomen, abdominal distension and fever of 39⁰, but without obliteration of the liver dullness. The diagnosis is


a) ruptured typhoid ulcer  
b) ruptured ectopic pregnancy  
c) primary bacterial peritonitis    
d) UTI with PID


Ans (c)