When Using a Commercially Prepared Tube to Collect a Culture,the

When using a commercially prepared tube to collect a culture,the nurse should

A) take the swab and mix it in the reagent to check for colour changes.
B) place the swab into the culture tube and then add a special reagent to the tube.
C) crush the ampule at the end of the tube and put the tip of the swab into the solution.
D) place the swab into the tube,close it securely,and keep it warm until it is sent to the laboratory.