During a Routine Health Checkup, an Adolescent Patient Expresses Concern

During a routine health checkup, an adolescent patient expresses concern about being sexually active at such a young age. What can the nurse instruct the patient with sexual issues? (Select all that apply.)

A) Do not be influenced by friends to have sex.
B) There is no 100% method to prevent pregnancy.
C) Learn about and practice safe sexual techniques.
D) Sexual activity does not harm routine physical activity.
E) Adolescence is the time when all sexual activity begins.