Karen is trying to become pregnant. She is concerned about contracting rubella, which she has never had and for which she has never been immunized. To help avoid any related problems with her child during pregnancy and afterward, she should ________.

A) discuss rubella immunization with her doctor before trying to get pregnant
B) get an immunization during pregnancy
C) have the child immunized after birth if she contracts rubella during pregnancy
D) make sure the child is immunized at the age of 5