Which of the Following Concerning Diamorphine Elixir for the Relief

Which of the following concerning diamorphine elixir for the relief of pain in terminal patients is corrcet?

A) Analgesia is enhanced if cocaine is added
B) Constipation is a characteristic sequel to treatment
C) Dependence occurs rapidly
D) initial sedation typically continues whilst the drug is administered
E) the same amount of pain relief is produced as when the same dose is given via intramuscular injection