A Woman Says That She Has Been Using 'The Medication

A woman says that she has been using 'the medication for a yeast infection' but it is not 'getting any better.' The nurse suspects that which of the following relates to this female? The woman:

A) needs to continue using the medication for a much longer period of time.
B) might be using a medication that is not appropriate for the cause.
C) is not using the medication correctly.
D) is not washing her hands before applying the medication.