Which Statement by the Patient About Proper Use of a Diaphragm

Which statement by the patient about proper use of a diaphragm for birth control indicates the need for further teaching? Select all that apply.

A) "This method is close to 99% effective when used properly."
B) "This method eliminates the risk for blood clots."
C) "I will need to insert it before sexual intercourse."
D) "I will need to keep it in place for 12 hours after intercourse."
E) "This method may not be effective when I am prescribed antibiotics."