27. According to the article, what is the best evidence to show the entero-mammary translocation of the maternal gut microbiota?
(A) Breast-feeding baby has the similar microbiota pattem with their mothers
(B) The bacteria derived from infant's oral cavity are similar to breastmilk microbiota
(C) Colostrum collected before the infant feeding already contains a microbial community
(D) None of the above statements is correct.