Which one of the following properties of naturally occurring D-amino acids is INCORRECT:

Select an option to attempt

1. A
   Peptides arising from them are more susceptible to attack by peptidases.
2. B
   They are components of bacterial cell wall.
3. C
   Peptides arising from them are not synthesized by ribosomal machinery.
4. D
   They are components of many bacterially produced peptide antibiotics.