During Pharmacology Class,a Nursing Professor Poses the Following Question: "We

During pharmacology class,a nursing professor poses the following question: "We have learned that certain medications,such as fluoroquinolones,are effective because they inhibit bacterial DNA replication.Why don't these medications cause harm to the nonbacterial cells in the body?" Which student nurse answered the question correctly?

A) Student B: "Medications such as fluoroquinolones do not appear to affect human DNA because human DNA is very similar to bacterial cell DNA."
B) Student D: "Human DNA is inherently healthier than bacterial DNA,so medications such as fluoroquinolones do not affect their replication."
C) Student C: "Medications such as fluoroquinolones don't appear to affect human DNA replication because of the difference between the enzymes needed for bacterial and human DNA replication."
D) Student A: "These medications protect healthy human cells while they attempt to disrupt bacterial DNA replication."