The correct option is B Both assertion and reason are true but reason is not the correct explanation of assertion
Amoxicillin is an antibiotic. It is broad spectrum because it is used to treat a number of bacterial infections such as middle ear infection, pneumonia, skin infections, urinary tract infections, etc.
Chemically, it is a semisynthetic derivative of penicillin with a structure similar to ampicillin (α-amino-p-hydroxybenzyl penicillin).