Which of the Following Is the Best Way to Handle

Which of the following is the best way to handle emotions while dealing with someone who has an alcohol/drug problem?

A) Ask why the person is using alcohol/drugs
B) Use sarcasm and ridicule the person to shame him into wanting to quit
C) Threaten to make ultimatums such as "I am moving out tomorrow if you don't get help"
D) Try to be calm, balanced, and caring