John Is a 37-Year-Old Male Who Is Suffering from an Unknown

John is a 37-year-old male who is suffering from an unknown bacterial infection that is causing him to feel quite ill.John was prescribed broad-spectrum antibiotics that kill a wide variety of bacteria.What effects would these antibiotics have on John's microbiome?

A) The antibiotics would likely change the diversity of his microbiome.
B) The antibiotics would likely only kill the harmful bacteria in his body.
C) The antibiotics would likely cause his microbiome to resemble the microbiome of a child.