$beta-lactam$ Drugs Bind to Penicillin-Binding Proteins to Halt the Synthesis of of Peptidoglycan

Multiple Choice

$beta-lactam$ drugs bind to penicillin-binding proteins to halt the synthesis of peptidoglycan. Where are these proteins located?

A) In the cytoplasm
B) In the cytoplasmic membrane
C) In the periplasmic space
D) In the peptidoglycan itself
E) In the capsule