Violation
Epinephrine in a local anaesthetic solution will 1. prevent rapid absorption of the anaesthetic. 2. assist haemostasis at the site of injection. 3. prolong the action of the anaesthetic agent. 4. assist in post-operative healing.
(2) and (4)
(1) (2) (3)
(1) and (3)
All of the above.
(4) only