A mother has chosen the breastfeed her newborn. She is receiving education from a lactation consultant regarding the benefits of breast feeding. She is told that since she had chicken pox as a child she is able to pass her immunity to her child through breastmilk. Which type of immunity is being described?

A. Passive natural: Immunity is transferred naturally from mother to child through breast milk, primarily via antibodies like IgA. The newborn receives protection without producing its own antibodies, which defines passive natural immunity. B. Active natural: Active natural immunity occurs when an individual is exposed to a pathogen and their own immune system produces antibodies in response. This is not the case with maternal antibody transfer. C. Passive artificial: Passive artificial immunity involves receiving preformed antibodies through medical intervention, such as an injection of immunoglobulin. This differs from the natural maternal transfer via breastfeeding. D. Active artificial: Active artificial immunity is acquired through vaccines, where the immune system actively produces antibodies in response to a controlled exposure to an antigen. This does not describe maternal antibody transfer.