Which of the following statements are true about lifeguard evaluations? Select three answers.

A. Evaluations must be performed by the Red Cross Aquatic Examiner Service.
B. The evaluator may host an in-service training session to help the lifeguard team improve their skills.
C. Evaluations are optional for each staff member.
D. Evaluations may occur unannounced.
E. Evaluations may be recorded.