Although Both Humans and Bacteria Have Ribosomes,streptomycin-Which Blocks Ribosome Function-Does

Multiple Choice

Although both humans and bacteria have ribosomes,streptomycin-which blocks ribosome function-does not harm a human who ingests it.Why?

A) Human cells have ribosomes that do not bind streptomycin;only prokaryotic ribosomes are affected by this drug.
B) Human cells contain a cell wall that prevents streptomycin from getting into the cytoplasm.
C) Human cells are much,much larger than bacteria cells,and antibiotics are diluted so much in the cytoplasm that they are ineffective.
D) Human cells have an extra lipid layer around their outsides,preventing streptomycin from entering them.
E) Human cells have far more ribosomes than bacteria,so relatively few ribosomes are blocked by streptomycin.