A nurse is providing teaching about immunizations to a client who is pregnant. Which of the following statements should the nurse include in the teaching?

A. The varicella vaccine should not be given during pregnancy, as it is a live vaccine. It should be given at least 1 month prior to conception. B. Hepatitis B immunization is safe during pregnancy and does not need to be delayed until after breastfeeding. C. The influenza vaccine is safe and recommended during any trimester of pregnancy, as it helps protect the mother and fetus. D. The rubella vaccine should not be administered during pregnancy due to the risk of teratogenic effects. It should be given postpartum.