Please Read the Clinical Scenario, and Then Answer the Question

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format.
Halley is a 62-year-old female, previously healthy with no significant medical history, and no known allergies. She is admitted to your medical-surgical floor for an infectious disease work-up. Halley has been experiencing generalized pain and nausea for the past 3 weeks, and recently developed a fever. The doctors at the urgent care center, and then the emergency department, were perplexed by her presentation. You have been ordered to perform several tests: complete blood count (CBC) , C-reactive protein (CRP) , eosinophil sedimentation rate (ESR) , blood culture, urine culture, and a lumbar puncture with cerebral spinal fluid (CSF) culture and cell count. You are also collecting a sputum culture, as well as swabbing her nose with a culturette, and performing a nasal wash.
-Halley's urine for culture was collected using a clean-catch method.After inoculation and incubation,several organisms were identified in amounts that were specified as normal microbial flora.What does this mean?

A) Halley is superinfected and needs immediate treatment.
B) It is impossible to interpret these results,and another clean-catch urine specimen needs to be cultured.
C) The results point to an infection,but due to multiple organisms,further testing needs to be done to isolate the offending microbe.
D) This is a common finding due to contamination of a clean-catch urine sample with normal microbiota from the urogenital area.