A Newly Developed Antibiotic Drug Shows Promise by Inhibiting Prokaryotic

A newly developed antibiotic drug shows promise by inhibiting prokaryotic 70S ribosomes in initial studies.However,when animal studies are begun,it's noted that it also inhibits growth of animal cells.Aren't prokaryotic ribosomes different from eukaryotic ribosomes? How can this be happening?

A) Perhaps the ribosomes aren't as different as we thought,so a drug can affect and impair both of them.
B) While the proteins made in the cytosol of eukaryotic cells are,indeed,produced from the 80S eukaryotic ribosome,mitochondria and chloroplasts possess 70S ribosomes.This drug might be impairing the activity of chloroplasts in animal cells.
C) While the proteins made in the cytosol of eukaryotic cells are,indeed,produced from the 80S eukaryotic ribosome,mitochondria and chloroplasts possess 70S ribosomes.This drug might be impairing the activity of mitochondria in animal cells.
D) Perhaps the scientists accidently combined their cultures of animal and bacterial cells-this might indicate an impairment in growth in the culture.In reality,it's still just impairing the bacterial cells.