A 74 year old man who has undergone prostatectomy which was followed by an indwelling catheter has developed symptoms of urinary tract infection. Urine culture grew Oxidase positive, nonlactose fermenting, Gram negative bacilli. Which of the following is the most likely causative microorganism?
A- Enterobacter aerogenes
B- Escherichia coli
C- Pseudomonas aeroginosa
D- Klebsiella pneumoniae
E- Serratia marcescens
A- Enterobacter aerogenes
B- Escherichia coli
C- Pseudomonas aeroginosa
D- Klebsiella pneumoniae
E- Serratia marcescens