All of the Following Statements Are True Regarding the Systemic

Multiple Choice

All of the following statements are true regarding the systemic delivery of antibiotics except:

A) ingested and then delivered via the bloodstream.
B) access the subgingival microflora via gingival crevicular fluid.
C) demonstrated efficacy on periodontal parameters.
D) delivers high concentrations to periodontitis sites compared with locally delivered methods.