47. Which of the following statements about antibiotic inhibitors of protein synthesis is correct?
(A) Chloamphenicol inhibits the peptidyl transferase activity of the large ribosomal subunit in eukaryotes.
(B) Cycloheximide inhibits the peptidyl transferase activity of the large ribosomal subunit in eukaryotes.
(C) Puromycin blocks protein synthesis in prokaryotes only.
(D) Streptomycin inhibits protein synthesis by binding to 30S ribosomal subunits.
(E) Erythromycin inhibits translocation in eukaryotes only.