To Provide Examples of an Active Acquired Immunity,the Nurse Uses

To provide examples of an active acquired immunity,the nurse uses the example of a person who has acquired immunity from measles because that person has had: (Select all that apply. )

A) chickenpox and mumps.
B) measles.
C) an extremely healthy immune system.
D) an inoculation against measles.
E) maternal antibodies against measles.