Which one of the following gram positive organism is most common cause of UTI among sexually active women?

Ans. is 'c' i.e., Staphylococcus saprophyticus(Ref: Ananthanarayan, 9th/e, p. 206 and 8th/e, p. 202)Staph saprophyticus may be present on normal human skin and the periurethral area and can cause urinary tract infection, particularly in sexually active young women.Note: Most common cause is E. coli, which is not provided in the option.