Callahan Cites the Oregon Death with Dignity Legal Defense and the Education

Callahan cites the Oregon Death with Dignity Legal Defense and the Education Center's finding that "after four full years . . . there have been no missteps, abuses or coercive tendencies" regarding laws permitting euthanasia. In response he argues that

A) they can't know this to be true without an anonymous survey.
B) other studies have found contrary results.
C) even if the finding is true, it is irrelevant to the moral status of euthanasia.
D) the findings are suspect because the study was performed by advocates of euthanasia.