When Testing for Vaginal PH,the Health-Care Provider Collecting the Sample

When testing for vaginal pH,the health-care provider collecting the sample should:

A) Place the specimen on the pH paper before placing swab into the saline solution
B) Place the specimen on the pH paper after mixing with potassium hydroxide (KOH)
C) Place the pH paper on the swab before collecting from the patient
D) Place the pH paper into the swab collection tube