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.
-The lumbar puncture was especially painful and uncomfortable for Halley.What step listed below is most important to be taken to ensure the procedure does not need to be performed a second time?

A) The specimens must be properly labeled.
B) The specimens must be properly obtained and stored.
C) The specimens must be collected in sufficient amounts.
D) The specimens must be properly transported.
E) All of the choices are equally important.