Antibiotics type of medicine kills disease-causing bacteria to prevent infections, but also kills the good bacteria that your body needs.
What is Antibiotics ?
Antibiotics are medicines that fight infections caused by bacteria in humans and animals by either killing the bacteria or making it difficult for the bacteria to grow and multiply.
What is antibiotic used for?
Antibiotics are used to treat or prevent some types of bacterial infections.
Hence, B is correct option
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