When a child begins to get its first teeth, what happens to the microbiota in the oral cavity?

a. The teeth are rapidly colonized by anaerobes, in particular Streptococcus, that are specifically adapted to growth in biofilms in the gingival crevices.
b. The teeth are rapidly colonized by obligate anaerobes, in particular Fusobacterium, that are specifically adapted to growth in biofilms on the surfaces of the teeth.
c. The teeth are rapidly colonized by anaerobes, in particular Streptococcus, that are specifically adapted to growth in biofilms on the surfaces of the teeth.
d. The teeth are rapidly colonized by aerobes, in particular Streptococcus, that are specifically adapted to growth in biofilms on the surfaces of the teeth.