Question: Agnes is allergic to Hydrocodon and was prescribed oxycotin in order to deal with pain after her shoulder surgery. Over the last year she has continued to use "Oxy" including getting it off the "streets" because the many doctors she has seen will no longer give it to her. In dire times she has used heroin when she couldn't find "oxy", but she would never really continue to use heroin once she found Oxy. She would do whatever she could to get "Oxy" including stealing it. Based on the reading, what is Agnes "Drug of Choice"?