It is true regarding the normal microbial flora present on the skin and mucous membranes that
a. It cannot be eradicated by antimicrobial agents
b.it is absent in the stomach due to acidic pH
c.It establishes in the body only after the neonatal period
d.The flora in the small bronchi is similar to that of the trachea
ans:c.It establishes in the body only after the neonatal period