Reducing the Rate of Systemic Absorption of a Local Anesthetic

Multiple Choice

Reducing the rate of systemic absorption of a local anesthetic is important when it is used in dentistry because

A) otherwise,too large an area would be anesthetized.
B) if not,the anesthesia would not last long enough to complete a dental procedure.
C) the chance of systemic toxicity is reduced.
D) local anesthesia is associated with respiratory depression.