A urine sample of a patient suspected to have urinary tract infection(UTI) was sent to the microbiology lab. On culture, the colony shows hemolysis on blood agar, on eosin methylene blue (EMB) agar the following is seen, a positive indole test, and a positive MUG test. The most likely etiologic organism is
Salmonella typhi Proteus vulgaris Klebsiella pneumoniae E.coli