When Instructing a Patient in the Use of Spermicidal Foam

Multiple Choice

When instructing a patient in the use of spermicidal foam or gel, it is important to include the information that

A) effectiveness is about 85%.
B) douching should be avoided for at least 6 hours.
C) it should be inserted 1 to 2 hours before intercourse.
D) one application is effective for several hours.