A nurse is providing discharge teaching to a postpartum client who had no immunity to rubella and received the rubella immunization.Which of the following statements by the client indicates an understanding of the teaching?

Choice A rationaleOnly one dose of rubella immunization is necessary post-delivery, no need for a second dose in 2 weeks.Choice B rationalePrevention of pregnancy is recommended for at least 1 month (not 4 months) after receiving the rubella vaccine to avoid possible teratogenic effects.Choice C rationaleAn additional rubella immunization is not recommended during pregnancy as the live vaccine is contraindicated during gestation.Choice D rationaleRubella vaccine is safe for breastfeeding mothers, as it does not affect the safety of breast milk.